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Castoldi NM, Pickering E, Sansalone V, Cooper D, Pivonka P. Bone turnover and mineralisation kinetics control trabecular BMDD and apparent bone density: insights from a discrete statistical bone remodelling model. Biomech Model Mechanobiol 2024; 23:893-909. [PMID: 38280951 PMCID: PMC11101591 DOI: 10.1007/s10237-023-01812-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/22/2023] [Indexed: 01/29/2024]
Abstract
The mechanical quality of trabecular bone is influenced by its mineral content and spatial distribution, which is controlled by bone remodelling and mineralisation. Mineralisation kinetics occur in two phases: a fast primary mineralisation and a secondary mineralisation that can last from several months to years. Variations in bone turnover and mineralisation kinetics can be observed in the bone mineral density distribution (BMDD). Here, we propose a statistical spatio-temporal bone remodelling model to study the effects of bone turnover (associated with the activation frequency Ac . f ) and mineralisation kinetics (associated with secondary mineralisation T sec ) on BMDD. In this model, individual basic multicellular units (BMUs) are activated discretely on trabecular surfaces that undergo typical bone remodelling periods. Our results highlight that trabecular BMDD is strongly regulated by Ac . f and T sec in a coupled way. Ca wt% increases with lower Ac . f and short T sec . For example, aAc . f = 4 BMU/year/mm3 and T sec = 8 years result in a mean Ca wt% of 25, which is in accordance with Ca wt% values reported in quantitative backscattered electron imaging (qBEI) experiments. However, for lower Ac . f and shorter T sec (from 0.5 to 4 years) one obtains a high Ca wt% and a very narrow skew BMDD to the right. This close link between Ac . f and T sec highlights the importance of considering both characteristics to draw meaningful conclusion about bone quality. Overall, this model represents a new approach to modelling healthy and diseased bone and can aid in developing deeper insights into disease states like osteoporosis.
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Affiliation(s)
- Natalia M Castoldi
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, Australia.
- UMR 8208, MSME, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, Créteil, France.
| | - Edmund Pickering
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, Australia
- Centre for Biomedical Technologies, Queensland University of Technology, Brisbane, Australia
| | - Vittorio Sansalone
- UMR 8208, MSME, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, Créteil, France
| | - David Cooper
- Department of Anatomy Physiology and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Peter Pivonka
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, Australia.
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程 军, 陈 建, 谢 鲤, 冯 世, 周 继, 占 方. [Treatment of cervical ossification of posterior longitudinal ligament with titanium alloy trabecular bone three-dimensional printed artificial vertebral body]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2024; 38:535-541. [PMID: 38752238 PMCID: PMC11096879 DOI: 10.7507/1002-1892.202403003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 04/22/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024]
Abstract
Objective To evaluate the effectiveness of using titanium alloy trabecular bone three-dimensional (3D) printed artificial vertebral body in treating cervical ossification of the posterior longitudinal ligament (OPLL). Methods A retrospective analysis was conducted on clinical data from 45 patients with cervical OPLL admitted between September 2019 and August 2021 and meeting the selection criteria. All patients underwent anterior cervical corpectomy and decompression, interbody bone graft fusion, and titanium plate internal fixation. During operation, 21 patients in the study group received titanium alloy trabecular bone 3D printed artificial vertebral bodies, while 24 patients in the control group received titanium cages. There was no significant difference in baseline data such as gender, age, disease duration, affected segments, or preoperative pain visual analogue scale (VAS) score, Japanese Orthopaedic Association (JOA) score, Neck Disability Index (NDI), vertebral height, and C 2-7Cobb angle ( P>0.05). Operation time, intraoperative blood loss, and occurrence of complications were recorded for both groups. Preoperatively and at 3 and 12 months postoperatively, the functionality and symptom relief were assessed using JOA scores, VAS scores, and NDI evaluations. The vertebral height and C 2-7 Cobb angle were detected by imaging examinations and the implant subsidence and intervertebral fusion were observed. Results The operation time and incidence of complications were significantly lower in the study group than in the control group ( P<0.05), while the difference in intraoperative blood loss between the two groups was not significant ( P>0.05). All patients were followed up 12-18 months, with the follow-up time of (14.28±4.34) months in the study group and (15.23±3.54) months in the control group, showing no significant difference ( t=0.809, P=0.423). The JOA score, VAS score, and NDI of the two groups improved after operation, and further improved at 12 months compared to 3 months, with significant differences ( P<0.05). At each time point, the study group exhibited significantly higher JOA scores and improvement rate compared to the control group ( P<0.05); but there was no significantly difference in VAS score and NDI between the two groups ( P>0.05). Imaging re-examination showed that the vertebral height and C 2-7Cobb angle of the two groups significantly increased at 3 and 12 months after operation ( P<0.05), and there was no significant difference between 3 and 12 months after operation ( P>0.05). At each time point, the vertebral height and C 2-7Cobb angle of the study group were significantly higher than those of the control group ( P<0.05), and the implant subsidence rate was significantly lower than that of the control group ( P<0.05). However, there was no significant difference in intervertebral fusion rate between the two groups ( P>0.05). Conclusion Compared to traditional titanium cages, the use of titanium alloy trabecular bone 3D-printed artificial vertebral bodies for treating cervical OPLL results in shorter operative time, fewer postoperative complications, and lower implant subsidence rates, making it superior in vertebral reconstruction.
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Affiliation(s)
- 军 程
- 锦州医科大学研究生培养基地(重庆大学附属三峡医院)(重庆万州 404100)Graduate Training Base of Jinzhou Medical University (Chongqing University Three Gorges Hospital), Wanzhou Chongqing, 404100, P. R. China
- 重庆大学附属三峡医院骨科中心(重庆万州 404100)Orthopedic Center, Chongqing University Three Gorges Hospital, Wanzhou Chongqing, 404100, P. R. China
| | - 建 陈
- 锦州医科大学研究生培养基地(重庆大学附属三峡医院)(重庆万州 404100)Graduate Training Base of Jinzhou Medical University (Chongqing University Three Gorges Hospital), Wanzhou Chongqing, 404100, P. R. China
- 重庆大学附属三峡医院骨科中心(重庆万州 404100)Orthopedic Center, Chongqing University Three Gorges Hospital, Wanzhou Chongqing, 404100, P. R. China
| | - 鲤钟 谢
- 锦州医科大学研究生培养基地(重庆大学附属三峡医院)(重庆万州 404100)Graduate Training Base of Jinzhou Medical University (Chongqing University Three Gorges Hospital), Wanzhou Chongqing, 404100, P. R. China
| | - 世龙 冯
- 锦州医科大学研究生培养基地(重庆大学附属三峡医院)(重庆万州 404100)Graduate Training Base of Jinzhou Medical University (Chongqing University Three Gorges Hospital), Wanzhou Chongqing, 404100, P. R. China
| | - 继斌 周
- 锦州医科大学研究生培养基地(重庆大学附属三峡医院)(重庆万州 404100)Graduate Training Base of Jinzhou Medical University (Chongqing University Three Gorges Hospital), Wanzhou Chongqing, 404100, P. R. China
| | - 方彪 占
- 锦州医科大学研究生培养基地(重庆大学附属三峡医院)(重庆万州 404100)Graduate Training Base of Jinzhou Medical University (Chongqing University Three Gorges Hospital), Wanzhou Chongqing, 404100, P. R. China
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Kunath BA, Beloglowka K, Rainbow R, Ploeg HL. Mechanical loading of ex vivo bovine trabecular bone in 3D printed bioreactor chambers. J Mech Behav Biomed Mater 2024; 153:106470. [PMID: 38422872 DOI: 10.1016/j.jmbbm.2024.106470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 02/05/2024] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
Previous ex vivo bone culture methods have successfully implemented polycarbonate (PC) bioreactors to investigate bone adaptation to mechanical load; however, they are difficult to fabricate and have been limited to a 5 mm maximum specimen height. The objective of this study was to validate a custom-made 3D printed MED610TM bioreactor system that addresses the limitations of the PC bioreactor and assess its efficacy in ex vivo bone culture. Twenty-three viable trabecular bone cores (10 mm height by 10 mm diameter) from an 18-month-old bovine sternum were cultured in MED610TM bioreactors with culture medium at 37 °C and 5% CO2 for 21-days. Bone cores were ranked based on their day 0 apparent elastic modulus (Eapp) and evenly separated into a "Load" group (n = 12) and a control group (n = 11). The Load group was loaded five times per week with a sinusoidal strain waveform between -1000 and -5000 με for 120 cycles at 2 Hz. Eapp was assessed on day 0, 8, and 21 using quasi-static tests with a -4000 με applied strain. Over 21-days, the Eapp of Load group samples tended to increase by more than double the control group (53.4% versus 20.9%) and no visual culture contamination was observed. This study demonstrated that bone organ culture in 3D printed MED610TM bioreactors replicated Eapp trends found in previous studies with PC bioreactors. However, further studies are warranted with a larger sample size to increase statistical power and histology to assess cell viability and bone mineral apposition rate.
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Affiliation(s)
- Brian A Kunath
- Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, Canada; Centre for Health Innovation, Queen's University, Kingston, ON, Canada.
| | - Kail Beloglowka
- Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, Canada; Centre for Health Innovation, Queen's University, Kingston, ON, Canada.
| | - Roshni Rainbow
- Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, Canada; Centre for Health Innovation, Queen's University, Kingston, ON, Canada.
| | - Heidi-Lynn Ploeg
- Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, Canada; Centre for Health Innovation, Queen's University, Kingston, ON, Canada.
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Distefano F, Epasto G. Effect of density grading on the mechanical behaviour of advanced functionally graded lattice structures. J Mech Behav Biomed Mater 2024; 153:106477. [PMID: 38428204 DOI: 10.1016/j.jmbbm.2024.106477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/03/2024]
Abstract
Lattice structures have found significant applications in the biomedical field due to their interesting combination of mechanical and biological properties. Among these, functionally graded structures sparked interest because of their potential of varying their mechanical properties throughout the volume, allowing the design of biomedical devices able to match the characteristics of a graded structure like human bone. The aim of this works is the study of the effect of the density grading on the mechanical response and the failure mechanisms of a novel functionally graded lattice structure, namely Triply Arranged Octagonal Rings (TAOR). The mechanical behaviour was compared with the same lattice structures having constant density ratio. Electron Beam Melting technology was used to manufacture titanium alloy specimens with global relative densities from 10% to 30%. Functionally graded structures were obtained by increasing the relative density along the specimen, by individually designing the lattice's layers. Scanning electron and a digital microscopy were used to evaluate the dimensional mismatch between actual and designed structures. Compressive tests were carried out to obtain the mechanical properties and to evaluate the collapse modes of the structures in relation to their average relative density and lattice grading. Open-source Digital Image Correlation algorithm was applied to evaluate the deformation behaviour of the structures and to calculate their elastic moduli. The results showed that uniform density structures provide higher mechanical properties than functionally graded ones. The Digital Image Correlation results showed the possibility of effectively designing the different layers of functionally graded structures selecting desired local mechanical properties to mimic the different characteristics of cortical and cancellous bone.
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Affiliation(s)
- Fabio Distefano
- Department of Engineering, University of Messina, Contrada di Dio, Vill. Sant'Agata, 98166, Messina, Italy
| | - Gabriella Epasto
- Department of Engineering, University of Messina, Contrada di Dio, Vill. Sant'Agata, 98166, Messina, Italy.
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Otagiri T, Sato N, Shiozaki T, Harayama Y, Matsumoto M, Kobayashi K, Asamura H. An optimal skeletal element for DNA testing: Evaluation of DNA quantity and quality from various bone types in routine forensic practice. Leg Med (Tokyo) 2024; 68:102415. [PMID: 38280273 DOI: 10.1016/j.legalmed.2024.102415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/19/2023] [Accepted: 01/18/2024] [Indexed: 01/29/2024]
Abstract
For human identification, the quality and quantity of DNA must be sufficient for amplification and analysis. When DNA extraction from bone tissues and teeth is required, the optimal skeletal elements should be selected as samples for DNA extraction because DNA yield differs among elements. Recently, some studies have reported that a high quantity of high-quality DNA can be extracted from the small cancellous bones of the hands and feet. In this study, we evaluated the effectiveness of small cancellous bones in the human identification of skeletal remains in routine forensic genetic casework. Cancellous bones [phalanges, (meta)carpal bones, and (meta)tarsal bones)] and the cortical bones (femur and petrous bones) and teeth, which have generally been recommended as samples, were collected from the same individuals that needed identifying using DNA analysis in our laboratory. The quantity of DNA from small cancellous bones tended to be higher than that from cortical bones, and the quality from the former was as high as that from the latter. This study showed that in routine forensic casework, the small cancellous bones of the hands and feet should be actively selected as samples for DNA testing.
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Affiliation(s)
- Tomomi Otagiri
- Department of Legal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan.
| | - Noriko Sato
- Department of Legal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan.
| | - Tetsuya Shiozaki
- Department of Legal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan.
| | - Yuta Harayama
- Department of Legal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan.
| | - Momoe Matsumoto
- Department of Legal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan.
| | - Kanya Kobayashi
- Department of Legal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan.
| | - Hideki Asamura
- Department of Legal Medicine, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan.
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Cartwright C, Ragni A, Hublin JJ, Chirchir H. Trabecular bone volume fraction in Holocene and Late Pleistocene humans. J Hum Evol 2024; 190:103499. [PMID: 38569444 DOI: 10.1016/j.jhevol.2024.103499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 04/05/2024]
Abstract
Research suggests that recent modern humans have gracile skeletons in having low trabecular bone volume fraction (BV/TV) and that gracilization of the skeleton occurred in the last 10,000 years. This has been attributed to a reduction in physical activity in the Holocene. However, there has been no thorough sampling of BV/TV in Pleistocene humans due to limited access to high resolution images of fossil specimens. Therefore, our study investigates the gracilization of BV/TV in Late Pleistocene humans and recent (Holocene) modern humans to improve our understanding of the emergence of gracility. We used microcomputed tomography to measure BV/TV in the femora, humeri and metacarpals of a sample of Late Pleistocene humans from Dolní Věstonice (Czech Republic, ∼26 ka, n = 6) and Ohalo II (Israel, ∼19 ka, n = 1), and a sample of recent humans including farming groups (n = 39) and hunter-gatherers (n = 6). We predicted that 1) Late Pleistocene humans would exhibit greater femoral and humeral head BV/TV compared with recent humans and 2) among recent humans, metacarpal head BV/TV would be greater in hunter-gatherers compared with farmers. Late Pleistocene humans had higher BV/TV compared with recent humans in both the femur and humerus, supporting our first prediction, and consistent with previous findings that Late Pleistocene humans are robust as compared to recent humans. However, among recent humans, there was no significant difference in BV/TV in the metacarpals between the two subsistence groups. The results highlight the similarity in BV/TV in the hand of two human groups from different geographic locales and subsistence patterns and raise questions about assumptions of activity levels in archaeological populations and their relationships to trabecular BV/TV.
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Affiliation(s)
- Caroline Cartwright
- Department of Biological Sciences, Marshall University, 1 John Marshall Drive, Huntington, WV, 25755, USA.
| | - Anna Ragni
- Department of Biology, University of Tampa, 401 W. Kennedy Boulevard, Tampa, FL 33606, USA
| | - Jean-Jacques Hublin
- Paléoanthropologie, CIRB (UMR 7241 - U1050), Collège de France, 11 Place Marcelin-Berthelot, 75231, Paris Cedex 05, France; Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany
| | - Habiba Chirchir
- Department of Biological Sciences, Marshall University, 1 John Marshall Drive, Huntington, WV, 25755, USA; Human Origins Program, Department of Anthropology, National Museum of Natural History, Smithsonian Institution, P.O Box 37012, Room 153, MRC 010, Washington, DC 20013, USA.
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Pohl C, Kunzmann M, Brandt N, Koppe C, Waletzko-Hellwig J, Bader R, Kalle F, Kersting S, Behrendt D, Schlosser M, Hoene A. Quantitative analysis of trabecular bone tissue cryosections via a fully automated neural network-based approach. PLoS One 2024; 19:e0298830. [PMID: 38625969 PMCID: PMC11020490 DOI: 10.1371/journal.pone.0298830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/30/2024] [Indexed: 04/18/2024] Open
Abstract
Cryosectioning is known as a common and well-established histological method, due to its easy accessibility, speed, and cost efficiency. However, the creation of bone cryosections is especially difficult. In this study, a cryosectioning protocol for trabecular bone that offers a relatively cheap and undemanding alternative to paraffin or resin embedded sectioning was developed. Sections are stainable with common histological dying methods while maintaining sufficient quality to answer a variety of scientific questions. Furthermore, this study introduces an automated protocol for analysing such sections, enabling users to rapidly access a wide range of different stainings. Therefore, an automated 'QuPath' neural network-based image analysis protocol for histochemical analysis of trabecular bone samples was established, and compared to other automated approaches as well as manual analysis regarding scattering, quality, and reliability. This highly automated protocol can handle enormous amounts of image data with no significant differences in its results when compared with a manual method. Even though this method was applied specifically for bone tissue, it works for a wide variety of different tissues and scientific questions.
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Affiliation(s)
- Christopher Pohl
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, Greifswald, Germany
| | - Moritz Kunzmann
- University of Heidelberg, BioQuant Center, Heidelberg, Germany
| | - Nico Brandt
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, Greifswald, Germany
| | - Charlotte Koppe
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, Greifswald, Germany
| | - Janine Waletzko-Hellwig
- Department of Oral, Maxillofacial and Plastic Surgery, Rostock University Medical Center, Rostock, Germany
- Department of Orthopaedics, Research Laboratory of Biomechanics and Implant Technology, Rostock University Medical Center, Rostock, Germany
| | - Rainer Bader
- Department of Orthopaedics, Research Laboratory of Biomechanics and Implant Technology, Rostock University Medical Center, Rostock, Germany
| | - Friederike Kalle
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Rostock University Medical Center, Rostock, Germany
| | - Stephan Kersting
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, Greifswald, Germany
| | - Daniel Behrendt
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, Greifswald, Germany
| | - Michael Schlosser
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, Greifswald, Germany
| | - Andreas Hoene
- Department of General Surgery, Visceral, Thoracic and Vascular Surgery, University Medical Center Greifswald, Greifswald, Germany
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Bernstein M, Little MTM, Marecek G. Current Management of Acute and Posttraumatic Critical Bone Defects. J Orthop Trauma 2024; 38:S1-S8. [PMID: 38502596 DOI: 10.1097/bot.0000000000002762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/04/2024] [Indexed: 03/21/2024]
Abstract
SUMMARY Limb reconstruction in patients with critical-sized bone defects remains a challenge due to the availability of various technically demanding treatment options and a lack of standardized decision algorithms. Although no consensus exists, it is apparent from the literature that the combination of patient, surgeon, and institutional collaborations is effective in providing the most efficient care pathway for these patients. Success relies on choosing a particular surgical approach that manages infection, soft tissue defects, stability, and alignment. Recent systematic reviews demonstrate high success rates with the following management options: Ilizarov bone transport, Masquelet (induced membrane) technique, cancellous bone grafting, and vascularized bone grafts.
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Affiliation(s)
- Mitchell Bernstein
- Department of Surgery, McGill University Health Center, Montreal QC, Canada
- Department of Pediatric Surgery, McGill University Health Center, Montreal QC, Canada; and
| | - Milton T M Little
- Department of Orthopaedic Surgery, Cedars-Sinai Medical Center, Beverly Hills, CA
| | - Geoffrey Marecek
- Department of Orthopaedic Surgery, Cedars-Sinai Medical Center, Beverly Hills, CA
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Gersie T, Bitter T, Wolfson D, Freeman R, Verdonschot N, Janssen D. Quantification of long-term nonlinear stress relaxation of bovine trabecular bone. J Mech Behav Biomed Mater 2024; 152:106434. [PMID: 38350383 DOI: 10.1016/j.jmbbm.2024.106434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 01/11/2024] [Accepted: 01/25/2024] [Indexed: 02/15/2024]
Abstract
The reliability of computational models in orthopedic biomechanics depends often on the accuracy of the bone material properties. It is widely recognized that the mechanical response of trabecular bone is time-dependent, yet it is often ignored for the sake of simplicity. Previous investigations into the viscoelastic properties of trabecular bone have not explored the relationship between nonlinear stress relaxation and bone mineral density. The inclusion of this behavior could enhance the accuracy of simulations of orthopedic interventions, such as of primary fixation of implants. Although methods to quantify the viscoelastic behavior are known, the time period during which the viscoelastic properties should be investigated to obtain reliable predictions is currently unclear. Therefore, this study aimed to: 1) Investigate the duration of stress relaxation in bovine trabecular bone; 2) construct a material model that describes the nonlinear viscoelastic behavior of uniaxial stress relaxation experiments on trabecular bone; and 3) implement bone density into this model. Uniaxial compressive stress relaxation experiments were performed with cylindrical bovine femoral trabecular bone samples (n = 16) with constant strain held for 24 h. Additionally, multiple stress relaxation experiments with four ascending strain levels with a holding time of 30 min, based on the results of the 24-h experiment, were executed on 18 bovine bone cores. The bone specimens used in this study had a mean diameter of 12.80 mm and a mean height of 28.70 mm. A Schapery and a Superposition model were used to capture the nonlinear stress relaxation behavior in terms of applied strain level and bone mineral density. While most stress relaxation happened in the first 10 min (up to 53 %) after initial compression, the stress relaxation continued even after 24 h. Up to 69 % of stress relaxation was observed at 24 h. Extrapolating the results of 30 min of experimental data to 24 h provided a good fit for accuracy with much improved experimental efficiency. The Schapery and Superposition model were both capable of fitting the repeated stress relaxation in a sample-by-sample approach. However, since bone mineral density did not influence the time-dependent behavior, only the Superposition model could be used for a group-based model fit. Although the sample-by-sample approach was more accurate for an individual specimen, the group based approach is considered a useful model for general application.
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Affiliation(s)
- Thomas Gersie
- Radboudumc, Orthopaedic Research Lab, PO Box 9101, 6500 HB, Nijmegen, Netherlands.
| | - Thom Bitter
- Radboudumc, Orthopaedic Research Lab, PO Box 9101, 6500 HB, Nijmegen, Netherlands
| | - David Wolfson
- DePuy Synthes Joint Reconstruction, WW Research & Development, LS11 OBG, Leeds, UK
| | - Robert Freeman
- DePuy Synthes Joint Reconstruction, WW Research & Development, LS11 OBG, Leeds, UK
| | - Nico Verdonschot
- Radboudumc, Orthopaedic Research Lab, PO Box 9101, 6500 HB, Nijmegen, Netherlands; University of Twente, Faculty of Science and Technology, 7522LW, Enschede, Netherlands
| | - Dennis Janssen
- Radboudumc, Orthopaedic Research Lab, PO Box 9101, 6500 HB, Nijmegen, Netherlands
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Machireddy M, Oberman AG, DeBiase L, Stephens M, Li J, Littlepage LE, Niebur GL. Controlled mechanical loading affects the osteocyte transcriptome in porcine trabecular bone in situ. Bone 2024; 181:117028. [PMID: 38309412 PMCID: PMC10923013 DOI: 10.1016/j.bone.2024.117028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 01/09/2024] [Accepted: 01/29/2024] [Indexed: 02/05/2024]
Abstract
INTRODUCTION Osteocytes modulate bone adaptation in response to mechanical stimuli imparted by the deforming bone tissue in which they are encased by communicating with osteoclasts and osteoblasts as well as other osteocytes in the lacuna-canalicular network through secreted cytokines and chemokines. Understanding the transcriptional response of osteocytes to mechanical stimulation in situ could identify new targets to inhibit bone loss or enhance bone formation in the presence of diseases like osteoporosis or metastatic cancer. We compared the mechanically regulated transcriptional response of osteocytes in trabecular bone following one or three days of controlled mechanical loading. METHODS Porcine trabecular bone explants were cultured in a bioreactor for 48 h and subsequently loaded twice a day for one day or 3 days. RNA was isolated and sequenced, and the Tuxedo suite was used to identify differentially expressed genes and pathway analysis was conducted using Ingenuity Pathway Analysis (IPA). RESULTS There were about 4000 differentially expressed genes following in situ culture relative to fresh bone. One hundred six genes were differentially expressed between the loaded and non-loaded groups following one day of loading compared to 913 genes after 3 d of loading. Only 45 of these were coincident between the two time points, indicating an evolving transcriptome. Clustering and principal component analysis indicated differences between the loaded and non-loaded groups after 3 d of loading. DISCUSSION With sustained loading, there was a nine-fold increase in the number of differentially expressed genes, suggesting that osteocytes respond to loading through sequential activation of downstream genes in the same pathways. The differentially expressed genes were related to osteoarthritis, osteocyte, and chondrocyte signaling pathways. We noted that NFkB and TNF signaling are affected by early loading and this may drive downstream effects on the mechanobiological response. Moreover, these genes may regulate catabolic effects of mechanical disuse through their actions on pre-osteoclasts in the bone marrow niche.
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Affiliation(s)
- Meghana Machireddy
- Tissue Mechanics Laboratory, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Alyssa G Oberman
- Tissue Mechanics Laboratory, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Lucas DeBiase
- Dept. of Aerospace and Mechanical Engineering, University of Notre Dame, IN 46556, USA
| | - Melissa Stephens
- Genomics and Bioinformatics Core Facility, University of Notre Dame, IN 46556, USA
| | - Jun Li
- Dept. of Applied Mathematics, Computations, and Statistics, University of Notre Dame, IN 46556, USA
| | - Laurie E Littlepage
- Dept. of Chemistry and Biochemistry, University of Notre Dame, IN 46556, USA; Harper Cancer Research Institute, University of Notre Dame, IN 46556, USA
| | - Glen L Niebur
- Tissue Mechanics Laboratory, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA; Harper Cancer Research Institute, University of Notre Dame, IN 46556, USA; Dept. of Aerospace and Mechanical Engineering, University of Notre Dame, IN 46556, USA.
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11
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He L, Zhao M, Cheung JPY, Zhang T, Ren X. Gaussian random field-based characterization and reconstruction of cancellous bone microstructure considering the constraint of correlation structure. J Mech Behav Biomed Mater 2024; 152:106443. [PMID: 38308976 DOI: 10.1016/j.jmbbm.2024.106443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/17/2024] [Accepted: 01/27/2024] [Indexed: 02/05/2024]
Abstract
The macro scale physical properties of cancellous bone materials are governed by the microstructural features, which is of great significance for the multi-scale research of cancellous bone and the inverse design of bone-mimicking materials. Therefore, it is essential to characterize the natural cancellous bone samples, and reconstruct the microstructures with the biomimetic osteointegration and mechanical properties. In this research, a novel approach for the characterization and reconstruction of cancellous bone was proposed, based on the medical image analysis and anisotropic three-dimensional Gaussian random field (GRF). The geometric similarity, i.e. the interface curvature distribution (ISD), was meticulously studied, which is important to the osteointegration ability. And the mechanical properties were validated by the stress-strain curves under the large compressive strain simulated by the smoothed particle hydrodynamic (SPH) method. In addition, the effects of the generation parameters of GRF-based biomimetic microstructures on the apparent properties were analyzed. The ISD results demonstrated that both GRF and micro-CT groups had the similar columnar morphological properties, while the latter had more hyperbolic features. And it was found that the GRF-based biomimetic microstructures and the natural bone samples based on micro-CT (MCT) had the similar failure mode. The concordance correlation coefficient between MCT and GRF pairs was 0.8685, with a Pearson ρ value of 0.8804, and significance level p<0.0001. The Bland-Altman LoA was 0.1647 MPa with 95 % (1.96SD) lower and upper bound value between -0.2892 and 0.6185 MPa. The two groups had almost the same elastic modulus with the mean absolute percentage error (MAPE) of 7.84 %. While the yield stress and total conversion energy of the GRF-based samples were lower than those of the natural bone samples, and the MAPE were 16.99 % and 16.27 %, respectively. Although it meant the lower structural efficiency, the huge design space of this approach and advanced 3D printing technology can provide great potential for the design of orthopedic implants.
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Affiliation(s)
- Lei He
- College of Civil Engineering, Tongji University, Shanghai, China
| | - Moxin Zhao
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Jason Pui Yin Cheung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Teng Zhang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
| | - Xiaodan Ren
- College of Civil Engineering, Tongji University, Shanghai, China.
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12
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Gong JY, Chiang C, Wark JD, Ritchie D, Panek-Hudson Y, Le MV, Limbri L, Fabila N, Fourlanos S, Yates CJ. Bone Density and Trabecular Bone Score Decline Rapidly in the First Year After Bone Marrow Transplantation with a Marked Increase in 10-Year Fracture Risk. Calcif Tissue Int 2024; 114:377-385. [PMID: 38376757 PMCID: PMC10957585 DOI: 10.1007/s00223-024-01189-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 01/24/2024] [Indexed: 02/21/2024]
Abstract
As outcomes from allogeneic bone marrow transplantation (BMT) have improved, prevention of long-term complications, such as fragility fractures, has gained importance. We aimed to assess areal bone mineral density (aBMD) and trabecular bone score (TBS) changes post BMT, and determine their relationship with fracture prevalence. Patients who attended the Royal Melbourne Hospital (RMH) BMT clinic between 2005-2021 were included. Patient characteristics and dual-energy X-ray absorptiometry (DXA) values were collected from the electronic medical record and a survey. TBS iNsight™ was used to calculate TBS for DXA scans performed from 2019 onwards. 337 patients with sequential DXAs were eligible for inclusion. Patients were primarily male (60%) and mean age ± SD was 45.7 ± 13.4 years. The annualised decline in aBMD was greater at the femoral neck (0.066g/cm2 (0.0038-0.17)) and total hip (0.094g/cm2 (0.013-0.19)), compared to the lumbar spine (0.049g/cm2 (- 0.0032-0.16)), p < 0.0001. TBS declined independently of aBMD T-scores at all sites. Eighteen patients (5.3%) sustained 19 fractures over 3884 person-years of follow-up post-transplant (median follow-up 11 years (8.2-15)). This 5.3% fracture prevalence over the median 11-year follow-up period is higher than what would be predicted with FRAX® estimates. Twenty-two patients (6.5%) received antiresorptive therapy, and 9 of 18 (50%) who fractured received or were on antiresorptive therapy. In BMT patients, aBMD and TBS decline rapidly and independently in the first year post BMT. However, FRAX® fracture probability estimates incorporating these values significantly underestimate fracture rates, and antiresorptive treatment rates remain relatively low.
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Affiliation(s)
- Joanna Y Gong
- Department of Diabetes & Endocrinology, Royal Melbourne Hospital, 300 Grattan Street, Parkville, Melbourne, VIC, 3052, Australia
- Department of Endocrinology & Diabetes, Western Health, Melbourne, Australia
| | - Cherie Chiang
- Department of Endocrinology & Diabetes, Western Health, Melbourne, Australia
- Endocrinology Department, Austin Health, Melbourne, Australia
- Department of Medicine (RMH), University of Melbourne, Melbourne, Australia
| | - John D Wark
- Department of Diabetes & Endocrinology, Royal Melbourne Hospital, 300 Grattan Street, Parkville, Melbourne, VIC, 3052, Australia
- Department of Medicine (RMH), University of Melbourne, Melbourne, Australia
| | - David Ritchie
- Department of Medicine (RMH), University of Melbourne, Melbourne, Australia
- Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Australia
| | - Yvonne Panek-Hudson
- Clinical Haematology, Peter MacCallum Cancer Centre and Royal Melbourne Hospital, Melbourne, Australia
| | - Minh V Le
- Department of Diabetes & Endocrinology, Royal Melbourne Hospital, 300 Grattan Street, Parkville, Melbourne, VIC, 3052, Australia
| | - Lydia Limbri
- Department of Medicine (RMH), University of Melbourne, Melbourne, Australia
- Northeast Health Wangaratta, Victoria, Australia
| | - Nicolo Fabila
- Department of Medicine (RMH), University of Melbourne, Melbourne, Australia
| | - Spiros Fourlanos
- Department of Diabetes & Endocrinology, Royal Melbourne Hospital, 300 Grattan Street, Parkville, Melbourne, VIC, 3052, Australia
- Department of Medicine (RMH), University of Melbourne, Melbourne, Australia
| | - Christopher J Yates
- Department of Diabetes & Endocrinology, Royal Melbourne Hospital, 300 Grattan Street, Parkville, Melbourne, VIC, 3052, Australia.
- Department of Endocrinology & Diabetes, Western Health, Melbourne, Australia.
- Department of Medicine (RMH), University of Melbourne, Melbourne, Australia.
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13
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Putri IL, Fatchiyah, Pramono C, Bachtiar I, Latief FDE, Utomo B, Rachman A, Soesilawati P, Hakim L, Rantam FA, Perdanakusuma DS. Alveolar Repair Using Cancellous Bone and Beta Tricalcium Phosphate Seeded With Adipose-Derived Stem Cell. Cleft Palate Craniofac J 2024; 61:555-565. [PMID: 36237116 DOI: 10.1177/10556656221132372] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Adipose-derived stem cells (ADSCs) have been subject of several studies due to their abundance, ease of preparation, and application in bone regeneration. We aim to compare effectiveness of alveolar reconstruction utilizing human cancellous freeze-dried graft (HCG) and beta tricalcium phosphate (BTP), both seeded with human ADSC (hADSC) and autologous bone graft (ABG). MATERIAL AND METHODS A 5 × 5 mm alveolar defect in 36 male Wistar rats were treated using: ABG (C), HCG-hADSC (H1), and BTP-hADSC (H2). At 1 and 8 weeks after surgery, runt-related transcription factor 2 (RUNX2), alkaline phosphatase (ALP), osterix (OSX), and bone morphogenetic protein 2 (BMP2; g/mL) were quantified using immunohistochemistry, while bone tissue volume (BV, mm3), bone tissue volume fraction (BF, percentage), and trabecular thickness of bone (TT, mm) were assessed using micro-computed tomography (CT). RESULTS One week after surgery, H2 was higher in RUNX2, OSX, ALP, and BMP2 than C (P < .05). Only RUNX2 and OSX were found to be higher in H1 than C, while ALP and BMP2 were higher in H2 than H1. Micro-CT revealed that H2 had a higher TT than C and C had a higher TT than H1 (P < .05). Eight weeks after surgery, both H2 and H1 was higher in RUNX2, OSX, ALP, and BMP2 than C (P < .05). RUNX2 and BMP2 were found to be higher in H1 than H2. Micro-CT revealed that H2 had higher BV and TT than C and H1 (P < .05). CONCLUSIONS Exogenous hADSC strengthened the effectiveness of HCG and BTP to accelerate osteogenesis, osteoconduction, and osteoinduction. The latter was the most successful in bone formation, followed by HCG and ABG.
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Affiliation(s)
- Indri Lakhsmi Putri
- Department of Plastic Reconstructive and Aesthetic Surgery, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Fatchiyah
- Department of Biology, Faculty of Mathematics and Natural Science, Brawijaya University, Malang, Indonesia
| | - Coen Pramono
- Department of Oral and Maxillofacial Surgery, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia
| | - Indra Bachtiar
- Regenic Laboratory, Stem Cell and Cancer Institute, Jakarta, Indonesia
| | - Fourier Dzar Eljabbar Latief
- Department of Physics, Faculty of Mathematics and Natural Science, Institut Teknologi Bandung, Bandung, Indonesia
| | - Budi Utomo
- Department of Community Health Sciences, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Arif Rachman
- Doctoral Program, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Pratiwi Soesilawati
- Department of Oral Biology, Faculty of Dental Medicine, Airlangga University, Surabaya, Indonesia
| | - Lukman Hakim
- Department of Urology, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
| | - Fedik Abdul Rantam
- Stem Cell Research and Development Center, Institute of Tropical Disease, Airlangga University, Surabaya, Indonesia
| | - David Sontani Perdanakusuma
- Department of Plastic Reconstructive and Aesthetic Surgery, Faculty of Medicine, Airlangga University, Surabaya, Indonesia
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Arboiro-Pinel R, Mahillo-Fernández I, Díaz-Curiel M. Primary Hyperparathyroidism: Assessment of the Effects of Parathyroidectomy Using Dual X-Ray Absorptiometry, Trabecular Bone Score, and Dual X-Ray Absorptiometry-Based Three-Dimensional Modeling. Endocr Pract 2024; 30:340-347. [PMID: 38184238 DOI: 10.1016/j.eprac.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 12/26/2023] [Accepted: 01/02/2024] [Indexed: 01/08/2024]
Abstract
OBJECTIVE This study aimed to evaluate the bone microstructure to determine whether curative surgery of primary hyperparathyroidism produces changes in bone mineral density (BMD), trabecular bone score (TBS), and three-dimensional (3D) dual x-ray absorptiometry (DXA) parameters and whether these changes are comparable. METHODS We retrospectively studied 85 patients (60 women and 25 men, 60.4 ± 12.5 years) diagnosed with primary hyperparathyroidism and undergoing parathyroidectomy. Mean percent changes in BMD (lumbar spine [LS], femoral neck [FN], total hip [TH], and 1/3 radius), TBS and 3D-DXA parameters (trabecular volumetric BMD (vBMD), cortical vBMD, integral vBMD, cortical surface density (sBMD), and cortical thickness at TH) after surgery (12, 24, and/or 36 months) were calculated and compared, and we sought the determinants of these changes. RESULTS After parathyroidectomy, BMD presented statistically significant mean increases in LS, FN, and TH during the first 3 years after surgery (P < .001), accompanied by an improvement in all 3D-DXA parameters, but there were no significant changes in 1/3 radius BMD or TBS. Cortical sBMD, trabecular vBMD, and integral vBMD reached mean increases of similar magnitude to those of FN and TH BMD. Age and preoperative serum levels of parathyroid hormone and carboxy-terminal telopeptide of type 1 collagen were significantly associated with percent changes after surgery. CONCLUSION We found a benefit of parathyroidectomy for bone, with significant percent increases in LS, FN, and TH BMD up to the third year after surgery, and a qualitative benefit for the hip in both its trabecular and cortical compartments and bone strength.
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Affiliation(s)
- Rosa Arboiro-Pinel
- Metabolic Bone Diseases Unit, Department of Internal Medicine, Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma Madrid, Madrid, Spain.
| | | | - Manuel Díaz-Curiel
- Metabolic Bone Diseases Unit, Department of Internal Medicine, Hospital Universitario Fundación Jiménez Díaz, Universidad Autónoma Madrid, Madrid, Spain
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15
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Eide PK, Ringstad G. Functional analysis of the human perivascular subarachnoid space. Nat Commun 2024; 15:2001. [PMID: 38443374 PMCID: PMC10914778 DOI: 10.1038/s41467-024-46329-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 02/20/2024] [Indexed: 03/07/2024] Open
Abstract
The human subarachnoid space harbors the cerebrospinal fluid, which flows within a landscape of blood vessels and trabeculae. Functional implications of subarachnoid space anatomy remain far less understood. This study of 75 patients utilizes a cerebrospinal fluid tracer (gadobutrol) and consecutive magnetic resonance imaging to investigate features of early (i.e. within 2-3 h after injection) tracer propagation within the subarachnoid space. There is a time-dependent perivascular pattern of enrichment antegrade along the major cerebral artery trunks; the anterior-, middle-, and posterior cerebral arteries. The correlation between time of first enrichment around arteries and early enrichment in nearby cerebral cortex is significant. These observations suggest the existence of a compartmentalized subarachnoid space, where perivascular ensheathment of arteries facilitates antegrade tracer passage towards brain tissue. Periarterial transport is impaired in subjects with reduced intracranial pressure-volume reserve capacity and in idiopathic normal pressure hydrocephalus patients who also show increased perivascular space size.
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Affiliation(s)
- Per Kristian Eide
- Department of Neurosurgery, Oslo University Hospital - Rikshospitalet, Pb 4950 Nydalen, N-0424, Oslo, Norway.
- KG Jebsen Centre for Brain Fluid Research, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PB 1072 Blindern, N-0316, Oslo, Norway.
| | - Geir Ringstad
- Department of Radiology, Oslo University Hospital- Rikshospitalet, Pb 4950 Nydalen, N-0424, Oslo, Norway
- Department of Geriatrics and Internal medicine, Sorlandet Hospital, 4838, Arendal, Arendal, Norway
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16
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Martin BL, Reynolds KJ, Fazzalari NL, Bottema MJ. Modelling the Effects of Growth and Remodelling on the Density and Structure of Cancellous Bone. Bull Math Biol 2024; 86:37. [PMID: 38436708 PMCID: PMC10912124 DOI: 10.1007/s11538-024-01267-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/08/2024] [Indexed: 03/05/2024]
Abstract
A two-stage model is proposed for investigating remodelling characteristics in bone over time and distance to the growth plate. The first stage comprises a partial differential equation (PDE) for bone density as a function of time and distance from the growth plate. This stage clarifies the contributions to changes in bone density due to remodelling and growth processes and tracks the rate at which new bone emanates from the growth plate. The second stage consists of simulating the remodelling process to determine remodelling characteristics. Implementing the second stage requires the rate at which bone moves away from the growth plate computed during the first stage. The second stage is also needed to confirm that remodelling characteristics predicted by the first stage may be explained by a realistic model for remodelling and to compute activation frequency. The model is demonstrated on microCT scans of tibia of juvenile female rats in three experimental groups: sham-operated control, oestrogen deprived, and oestrogen deprived followed by treatment. Model predictions for changes in bone density and remodelling characteristics agree with the literature. In addition, the model provides new insight into the role of treatment on the density of new bone emanating from the growth plate and provides quantitative descriptions of changes in remodelling characteristics beyond what has been possible to ascertain by experimentation alone.
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Affiliation(s)
- Brianna L Martin
- Marine Spatial Ecology Laboratory, School of the Environment, The University of Queensland, Level 5, Goddard Building, St. Lucia, QLD, 4072, Australia
| | - Karen J Reynolds
- Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley Campus, 1284 South Rd, Clovelly Park, SA, 5042, Australia
| | - Nicola L Fazzalari
- Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley Campus, 1284 South Rd, Clovelly Park, SA, 5042, Australia
| | - Murk J Bottema
- Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley Campus, 1284 South Rd, Clovelly Park, SA, 5042, Australia.
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17
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Tanner BCW, Palmer BM, Chung CS. Strain rate of stretch affects crossbridge detachment during relaxation of intact cardiac trabeculae. PLoS One 2024; 19:e0297212. [PMID: 38437198 PMCID: PMC10911597 DOI: 10.1371/journal.pone.0297212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/29/2023] [Indexed: 03/06/2024] Open
Abstract
Mechanical Control of Relaxation refers to the dependence of myocardial relaxation on the strain rate just prior to relaxation, but the mechanisms of enhanced relaxation are not well characterized. This study aimed to characterize how crossbridge kinetics varied with strain rate and time-to-stretch as the myocardium relaxed in early diastole. Ramp-stretches of varying rates (amplitude = 1% muscle length) were applied to intact rat cardiac trabeculae following a load-clamp at 50% of the maximal developed twitch force, which provides a first-order estimate of ejection and coupling to an afterload. The resultant stress-response was calculated as the difference between the time-dependent stress profile between load-clamped twitches with and without a ramp-stretch. The stress-response exhibited features of the step-stretch response of activated, permeabilized myocardium, such as distortion-dependent peak stress, rapid force decay related to crossbridge detachment, and stress recovery related to crossbridge recruitment. The peak stress was strain rate dependent, but the minimum stress and the time-to-minimum stress values were not. The initial rapid change in the stress-response indicates enhanced crossbridge detachment at higher strain rates during relaxation in intact cardiac trabeculae. Physiologic considerations, such as time-varying calcium, are discussed as potential limitations to fitting these data with traditional distortion-recruitment models of crossbridge activity.
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Affiliation(s)
- Bertrand C. W. Tanner
- Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, Washington, United States of America
| | - Bradley M. Palmer
- Department of Molecular Physiology and Biophysics, University of Vermont, Burlington, Vermont, United States of America
| | - Charles S. Chung
- Department of Physiology, Wayne State University, Detroit, Michigan, United States of America
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18
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Guo W, Lu B, Liu F, Jin D, Wu S, Zhou S, Li Z, Lv Y, Zhao Z, Zhang J, Li Y. Comprehensive repair of the alveolar cleft using cortical and cancellous bone layers: A retrospective study. J Craniomaxillofac Surg 2024; 52:310-315. [PMID: 38212164 DOI: 10.1016/j.jcms.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 10/11/2023] [Accepted: 01/04/2024] [Indexed: 01/13/2024] Open
Abstract
To retrospectively review the clinical effect of comprehensive treatment of alveolar cleft (CTAC) using the mandible as the bone source. Patients with alveolar clefts who met the inclusion criteria were subjected to a CTAC protocol that included the following: (1) preoperative orthodontic treatment for creating good soft-tissue conditions; (2) 'area-like grafting' with subperiosteal osteogenic chin bone instead of cartilaginous osteogenic iliac bone; (3) simulation of normal bone anatomy via a sandwich-like bone graft consisting of 'cortical bone + cancellous bone + cortical bone'; and (4) strong internal fixation to ensure initial bone block stability. At 6 months postoperatively, the titanium plate was removed and cone-beam computed tomography was performed to evaluate the surgical results. A total of 54 patients underwent treatment with the CTAC protocol. The average age at the initial operation was 10.3 ± 2.1 years, and the average hospital stay was 2.8 ± 0.6 days. At 6 months postoperatively, 49 patients (90.7%) showed good clinical results. The transplanted bone block formed a 'cortical bone + cancellous bone + cortical bone' structure similar to that of the normal jawbone. A mature bone bridge formed, and the impacted permanent teeth continued to erupt and enter the bone graft area. CTAC is a comprehensive restorative solution for alveolar cleft repair that integrates multiple concepts, including orthodontics, embryology, anatomy, and improvements to surgical methods. The method is easy to perform, causes little surgical trauma, and shows a stable success rate, and is thus worth promoting.
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Affiliation(s)
- Weiwei Guo
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Bin Lu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Fuwei Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Dan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Simo Wu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Shanluo Zhou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Zhiye Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Yaoguang Lv
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Zhihe Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China
| | - Junrui Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China.
| | - Yunpeng Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, PR China.
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Zhang Y, Shi Z, Wang H, Cui S, Zhang L, Liu J, Shan X, Liu Y, Fang L. LumVertCancNet: A novel 3D lumbar vertebral body cancellous bone location and segmentation method based on hybrid Swin-transformer. Comput Biol Med 2024; 171:108237. [PMID: 38422966 DOI: 10.1016/j.compbiomed.2024.108237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 01/12/2024] [Accepted: 02/25/2024] [Indexed: 03/02/2024]
Abstract
Lumbar vertebral body cancellous bone location and segmentation is crucial in an automated lumbar spine processing pipeline. Accurate and reliable analysis of lumbar spine image is expected to advantage practical medical diagnosis and population-based analysis of bone strength. However, the design of automated algorithms for lumbar spine processing is demanding due to significant anatomical variations and scarcity of publicly available data. In recent years, convolutional neural network (CNN) and vision transformers (Vits) have been the de facto standard in medical image segmentation. Although adept at capturing global features, the inherent bias of locality and weight sharing of CNN constrains its capacity to model long-range dependency. In contrast, Vits excel at long-range dependency modeling, but they may not generalize well with limited datasets due to the lack of inductive biases inherent to CNN. In this paper, we propose a deep learning-based two-stage coarse-to-fine solution to address the problem of automatic location and segmentation of lumbar vertebral body cancellous bone. Specifically, in the first stage, a Swin-transformer based model is applied to predict the heatmap of lumbar vertebral body centroids. Considering the characteristic anatomical structure of lumbar spine, we propose a novel loss function called LumAnatomy loss, which enforces the order and bend of the predicted vertebral body centroids. To inherit the excellence of CNN and Vits while preventing their respective limitations, in the second stage, we propose an encoder-decoder network to segment the identified lumbar vertebral body cancellous bone, which consists of two parallel encoders, i.e., a Swin-transformer encoder and a CNN encoder. To enhance the combination of CNNs and Vits, we propose a novel multi-scale attention feature fusion module (MSA-FFM), which address issues that arise when fusing features given at different encoders. To tackle the issue of lack of data, we raise the first large-scale lumbar vertebral body cancellous bone segmentation dataset called LumVBCanSeg containing a total of 185 CT scans annotated at voxel level by 3 physicians. Extensive experimental results on the LumVBCanSeg dataset demonstrate the proposed algorithm outperform other state-of-the-art medical image segmentation methods. The data is publicly available at: https://zenodo.org/record/8181250. The implementation of the proposed method is available at: https://github.com/sia405yd/LumVertCancNet.
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Affiliation(s)
- Yingdi Zhang
- Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences, Shenyang 110016, China; Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Zelin Shi
- Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences, Shenyang 110016, China; Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huan Wang
- Spine Surgery Department, ShengJing Hospital of China Medical University, Shenyang, China
| | - Shaoqian Cui
- Spine Surgery Department, ShengJing Hospital of China Medical University, Shenyang, China
| | - Lei Zhang
- Spine Surgery Department, ShengJing Hospital of China Medical University, Shenyang, China
| | - Jiachen Liu
- Spine Surgery Department, ShengJing Hospital of China Medical University, Shenyang, China
| | - Xiuqi Shan
- Spine Surgery Department, ShengJing Hospital of China Medical University, Shenyang, China
| | - Yunpeng Liu
- Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences, Shenyang 110016, China; Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lei Fang
- Key Laboratory of Opto-Electronic Information Processing, Chinese Academy of Sciences, Shenyang 110016, China; Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China; Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
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20
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Parmar S, Datarkar A, Valvi B, Deshpande A. Evaluation of maxillary alveolar ridge formation and ridge continuity after secondary alveolar bone grafting using cancellous and cortico- cancellous bone graft in unilateral cleft alveolus using cone beam computed tomographic scan - a randomized controlled trial. Oral Maxillofac Surg 2024; 28:315-321. [PMID: 36826684 DOI: 10.1007/s10006-023-01145-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 02/19/2023] [Indexed: 02/25/2023]
Abstract
PURPOSE The aim of present study was to compare and evaluate the maxillary alveolar ridge formation and ridge continuity using cancellous and corticocanellous bone graft harvested from anterior iliac crest for complete secondary unilateral cleft alveolus defects. MATERIAL AND METHOD All patients were randomized into two groups for secondary alveolar bone grafting. Group I (n = 10) patients treated with cancellous particulate bone graft and group II (n = 10) patients treated with cortico-cancellous block graft. Maxillary alveolar ridge bone formation was assessed with the help of cone beam computed tomography (CBCT) scan using Planmeca Romexis Viewer 5.0 software. Maxillary alveolar ridge continuity was assessed with axial section of CBCT scan and clinical occlusal photograph. Preoperative CBCT scan and occlusal photographs were compared with post-op 6-month CBCT scan and occlusal photographs. RESULT The mean preoperative volume of cleft defect in group I was 4.2576 cm3 whereas in group II it was 4.2268 cm3. The mean postoperative bone bridge formation after 6 months in group I was 4.055 cm3 whereas in group II it was 3.8103 cm3. Preoperative and 6-month postoperative axial sections of CBCT scans were compared and 100% maxillary alveolar ridge continuity was achieved in both groups. The preoperative and postoperative occlusal photographs of both the groups were compared and showed accurate bone and well aligned maxillary alveolar ridge formation in all patients. CONCLUSION The present study concluded that maxillary alveolar ridge formation rate is less in cortico-cancellous iliac crest block graft compared to cancellous iliac crest particulate graft, but is equally good as cancellous bone graft. CLINICAL TRIAL REGISTRATION NO (REF/2020/09/031605)/ CTRI/ 2020/09/028001.
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Affiliation(s)
- Suraj Parmar
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Nagpur, Maharashtra, 440003, India
| | - Abhay Datarkar
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Nagpur, Maharashtra, 440003, India
| | - Bhavana Valvi
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Nagpur, Maharashtra, 440003, India.
| | - Archana Deshpande
- Department of Oral and Maxillofacial Surgery, Government Dental College and Hospital, Nagpur, Maharashtra, 440003, India
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21
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Zhou Y, Klintström E, Klintström B, Ferguson SJ, Helgason B, Persson C. A convolutional neural network-based method for the generation of super-resolution 3D models from clinical CT images. Comput Methods Programs Biomed 2024; 245:108009. [PMID: 38219339 DOI: 10.1016/j.cmpb.2024.108009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/01/2023] [Accepted: 01/05/2024] [Indexed: 01/16/2024]
Abstract
BACKGROUND AND OBJECTIVE The accurate evaluation of bone mechanical properties is essential for predicting fracture risk based on clinical computed tomography (CT) images. However, blurring and noise in clinical CT images can compromise the accuracy of these predictions, leading to incorrect diagnoses. Although previous studies have explored enhancing trabecular bone CT images to super-resolution (SR), none of these studies have examined the possibility of using clinical CT images from different instruments, typically of lower resolution, as a basis for analysis. Additionally, previous studies rely on 2D SR images, which may not be sufficient for accurate mechanical property evaluation, due to the complex nature of the 3D trabecular bone structures. The objective of this study was to address these limitations. METHODS A workflow was developed that utilizes convolutional neural networks to generate SR 3D models across different clinical CT instruments. The morphological and finite-element-derived mechanical properties of these SR models were compared with ground truth models obtained from micro-CT scans. RESULTS A significant improvement in analysis accuracy was demonstrated, where the new SR models increased the accuracy by up to 700 % compared with the low-resolution data, i.e. clinical CT images. Additionally, we found that the mixture of different CT image datasets may improve the SR model performance. CONCLUSIONS SR images, generated by convolutional neural networks, outperformed clinical CT images in the determination of morphological and mechanical properties. The developed workflow could be implemented for fracture risk prediction, potentially leading to improved diagnoses and subsequent clinical decision making.
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Affiliation(s)
- Yijun Zhou
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Ångströmlaboratoriet, Uppsala University, Lägerhyddsvägen 1, Uppsala 75237, Sweden
| | - Eva Klintström
- Center for Medical Image Science and Visualization (CMIV), Linköping University, Sweden; Department of Radiology and Department of Health, Medicine and Caring Sciences, Linköping University, Sweden
| | - Benjamin Klintström
- Department of Biomedical Engineering and Health Systems, KTH Royal Institute of Technology, Huddinge, Sweden
| | | | | | - Cecilia Persson
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Ångströmlaboratoriet, Uppsala University, Lägerhyddsvägen 1, Uppsala 75237, Sweden.
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22
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Wang L, Meloro C, Fagan MJ, Kissane RWP, Bates KT, Askew GN, Watson PJ. Regional variation of the cortical and trabecular bone material properties in the rabbit skull. PLoS One 2024; 19:e0298621. [PMID: 38412158 PMCID: PMC10898762 DOI: 10.1371/journal.pone.0298621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/27/2024] [Indexed: 02/29/2024] Open
Abstract
The material properties of some bones are known to vary with anatomical location, orientation and position within the bone (e.g., cortical and trabecular bone). Details of the heterogeneity and anisotropy of bone is an important consideration for biomechanical studies that apply techniques such as finite element analysis, as the outcomes will be influenced by the choice of material properties used. Datasets detailing the regional variation of material properties in the bones of the skull are sparse, leaving many finite element analyses of skulls no choice but to employ homogeneous, isotropic material properties, often using data from a different species to the one under investigation. Due to the growing significance of investigating the cranial biomechanics of the rabbit in basic science and clinical research, this study used nanoindentation to measure the elastic modulus of cortical and trabecular bone throughout the skull. The elastic moduli of cortical bone measured in the mediolateral and ventrodorsal direction were found to decrease posteriorly through the skull, while it was evenly distributed when measured in the anteroposterior direction. Furthermore, statistical tests showed that the variation of elastic moduli between separate regions (anterior, middle and posterior) of the skull were significantly different in cortical bone, but was not in trabecular bone. Elastic moduli measured in different orthotropic planes were also significantly different, with the moduli measured in the mediolateral direction consistently lower than that measured in either the anteroposterior or ventrodorsal direction. These findings demonstrate the significance of regional and directional variation in cortical bone elastic modulus, and therefore material properties in finite element models of the skull, particularly those of the rabbit, should consider the heterogeneous and orthotropic properties of skull bone when possible.
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Affiliation(s)
- Linje Wang
- Structural Biomechanics, Department of Civil and Environmental Engineering, Imperial College London, London, United Kingdom
- School of Engineering, University of Hull, Hull, United Kingdom
| | - Carlo Meloro
- Research Centre in Evolutionary Anthropology and Palaeoecology, School of Biological and Environmental Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Michael J Fagan
- School of Engineering, University of Hull, Hull, United Kingdom
| | - Roger W P Kissane
- Department of Musculoskeletal & Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Karl T Bates
- Department of Musculoskeletal & Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Graham N Askew
- School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | - Peter J Watson
- School of Engineering, University of Hull, Hull, United Kingdom
- Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, United Kingdom
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23
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Yang G, He Q, Guo X, Li RY, Lin J, Lang Y, Tao W, Liu W, Lin H, Xing S, Qi Y, Xie Z, Han JDJ, Zhou B, Teng Y, Yang X. Identification of the metaphyseal skeletal stem cell building trabecular bone. Sci Adv 2024; 10:eadl2238. [PMID: 38394209 PMCID: PMC10889359 DOI: 10.1126/sciadv.adl2238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/22/2024] [Indexed: 02/25/2024]
Abstract
Skeletal stem cells (SSCs) that are capable of self-renewal and multipotent differentiation contribute to bone development and homeostasis. Several populations of SSCs at different skeletal sites have been reported. Here, we identify a metaphyseal SSC (mpSSC) population whose transcriptional landscape is distinct from other bone mesenchymal stromal cells (BMSCs). These mpSSCs are marked by Sstr2 or Pdgfrb+Kitl-, located just underneath the growth plate, and exclusively derived from hypertrophic chondrocytes (HCs). These HC-derived mpSSCs have properties of self-renewal and multipotency in vitro and in vivo, producing most HC offspring postnatally. HC-specific deletion of Hgs, a component of the endosomal sorting complex required for transport, impairs the HC-to-mpSSC conversion and compromises trabecular bone formation. Thus, mpSSC is the major source of BMSCs and osteoblasts in bone marrow, supporting the postnatal trabecular bone formation.
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Affiliation(s)
- Guan Yang
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Qi He
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
- Bioinformatics Center of AMMS, Beijing 100850, China
| | - Xiaoxiao Guo
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing 100871, China
| | - Rong-Yu Li
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Jingting Lin
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Yiming Lang
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Wanyu Tao
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing 100871, China
| | - Wenjia Liu
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Huisang Lin
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Shilai Xing
- School of Ophthalmology & Optometry and Eye Hospital, Institute of Biomedical Big Data, Wenzhou Medical University, Wenzhou 325027, China
| | - Yini Qi
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Zhongliang Xie
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Jing-Dong J. Han
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing 100871, China
| | - Bin Zhou
- New Cornerstone Science Laboratory, State Key Laboratory of Cell Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Yan Teng
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
| | - Xiao Yang
- State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences, Beijing Institute of Lifeomics, Beijing 102206, China
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24
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Wang M, Li B, Feng H, Ye Q, Sun Y, Duan X, He J. Assessment of the osteogenic effect after maxillary sinus floor elevation and simultaneous implantation with or without bone grafts by analyzing trabecular bone parameters: a retrospective study. J Appl Oral Sci 2024; 32:e20230406. [PMID: 38359269 PMCID: PMC10984575 DOI: 10.1590/1678-7757-2023-0406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/14/2023] [Accepted: 12/18/2023] [Indexed: 02/17/2024] Open
Abstract
OBJECTIVE The aim of this population-based retrospective study was to compare the osteogenic effect of newly formed bone after maxillary sinus floor elevation (MSFE) and simultaneous implantation with or without bone grafts by quantitatively analyzing trabecular bone parameters. METHODOLOGY A total of 100 patients with missing posterior maxillary teeth who required MSFE and implantation were included in this study. Patients were divided into two groups: the non-graft group (n=50) and the graft group (n=50). Radiographic parameters were measured using cone beam computed tomography (CBCT), and the quality of newly formed bone was analyzed by assessing trabecular bone parameters using CTAn (CTAnalyzer, SkyScan, Antwerp, Belgium) software. RESULTS In the selected regions of interest, the non-graft group showed greater bone volume/total volume (BV/TV), bone surface/total volume (BS/TV), trabecular number (Tb. N), and trabecular thickness (Tb. Th) than the graft group (p<0.001). The non-graft group showed lower trabecular separation (Tb. Sp) than the graft group (p<0.001). The incidence of perforation and bleeding was higher in the graft group than in the non-graft group (p<0.001), but infection did not significantly differ between groups (p>0.05). Compared to the graft group, the non-graft group showed lower postoperative bone height, gained bone height and apical bone height (p<0.001). CONCLUSION MSFE with and without bone grafts can significantly improve bone formation. In MSFE, the use of bone grafts hinders the formation of good quality bone, whereas the absence of bone grafts can generate good bone quality and limited bone mass.
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Affiliation(s)
- Mohan Wang
- Anhui Medical UniversityStomatologic Hospital & CollegeKey Laboratory of Oral Diseases Research of Anhui ProvinceHefeiChinaAnhui Medical University, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.
- Shanghai Jiao Tong University School of MedicineNinth People's HospitalCollege of StomatologyShanghaiChinaShanghai Jiao Tong University School of Medicine, Ninth People's Hospital, College of Stomatology, Department of Oral and Maxillofacial Surgery, Shanghai, China.
| | - Beibei Li
- Anhui Medical UniversityStomatologic Hospital & CollegeKey Laboratory of Oral Diseases Research of Anhui ProvinceHefeiChinaAnhui Medical University, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.
| | - Hailiang Feng
- Zhejiang University School of MedicineThe Second Affiliated HospitalDepartment of StomatologyHangzhouChinaZhejiang University School of Medicine, The Second Affiliated Hospital, Linping Campus, Department of Stomatology, Hangzhou, China.
| | - Qingsong Ye
- Anhui Medical UniversityStomatologic Hospital & CollegeKey Laboratory of Oral Diseases Research of Anhui ProvinceHefeiChinaAnhui Medical University, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.
| | - Yahui Sun
- Anhui Medical UniversityStomatologic Hospital & CollegeKey Laboratory of Oral Diseases Research of Anhui ProvinceHefeiChinaAnhui Medical University, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.
| | - Xinxiu Duan
- Anhui Medical UniversityStomatologic Hospital & CollegeKey Laboratory of Oral Diseases Research of Anhui ProvinceHefeiChinaAnhui Medical University, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.
| | - Jiacai He
- Anhui Medical UniversityStomatologic Hospital & CollegeKey Laboratory of Oral Diseases Research of Anhui ProvinceHefeiChinaAnhui Medical University, Stomatologic Hospital & College, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China.
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25
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Antonini S, Pedersini R, Birtolo MF, Baruch NL, Carrone F, Jaafar S, Ciafardini A, Cosentini D, Laganà M, Torrisi R, Farina D, Leonardi L, Balzarini L, Vena W, Bossi AC, Zambelli A, Lania AG, Berruti A, Mazziotti G. Denosumab improves trabecular bone score in relationship with decrease in fracture risk of women exposed to aromatase inhibitors. J Endocrinol Invest 2024; 47:433-442. [PMID: 37592052 DOI: 10.1007/s40618-023-02174-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/03/2023] [Indexed: 08/19/2023]
Abstract
PURPOSE Trabecular bone score (TBS) is a gray-level textural metric that has shown to correlate with risk of fractures in several forms of osteoporosis. The value of TBS in predicting fractures and the effects of bone-active drugs on TBS in aromatase inhibitors (AIs)-induced osteoporosis are still largely unknown. The primary objective of this retrospective study was to assess the effects of denosumab and bisphosphonates (BPs) on TBS and vertebral fractures (VFs) in women exposed to AIs. METHODS 241 consecutive women (median age 58 years) with early breast cancer undergoing treatment with AIs were evaluated for TBS, bone mineral density (BMD) and morphometric VFs at baseline and after 18-24 months of follow-up. During the study period, 139 women (57.7%) received denosumab 60 mg every 6 months, 53 (22.0%) BPs, whereas 49 women (20.3%) were not treated with bone-active drugs. RESULTS Denosumab significantly increased TBS values (from 1.270 to 1.323; P < 0.001) accompanied by a significant decrease in risk of VFs (odds ratio 0.282; P = 0.021). During treatment with BPs, TBS did not significantly change (P = 0.849) and incidence of VFs was not significantly different from women untreated with bone-active drugs (P = 0.427). In the whole population, women with incident VFs showed higher decrease in TBS vs. non-fractured women (P = 0.003), without significant differences in changes of BMD at any skeletal site. CONCLUSIONS TBS variation predicts fracture risk in AIs treated women. Denosumab is effective to induce early increase of TBS and reduction in risk of VFs.
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Affiliation(s)
- S Antonini
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy
- Endocrinology, Diabetology and Andrology Unit, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - R Pedersini
- Medical Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, ASST Spedali Civili of Brescia, Brescia, Italy
| | - M F Birtolo
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy
- Endocrinology, Diabetology and Andrology Unit, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - N L Baruch
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy
| | - F Carrone
- Endocrinology, Diabetology and Andrology Unit, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - S Jaafar
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy
- Endocrinology, Diabetology and Andrology Unit, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - A Ciafardini
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy
- Endocrinology, Diabetology and Andrology Unit, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - D Cosentini
- Medical Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, ASST Spedali Civili of Brescia, Brescia, Italy
| | - M Laganà
- Medical Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, ASST Spedali Civili of Brescia, Brescia, Italy
| | - R Torrisi
- Cancer Center, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - D Farina
- Radiology Unit 2, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, ASST Spedali Civili of Brescia, Brescia, Italy
| | - L Leonardi
- Department of Radiology, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - L Balzarini
- Department of Radiology, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - W Vena
- Endocrinology, Humanitas Gavazzeni-Castelli, Bergamo, Italy
| | - A C Bossi
- Endocrinology, Humanitas Gavazzeni-Castelli, Bergamo, Italy
| | - A Zambelli
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy
- Cancer Center, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy
| | - A G Lania
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy.
- Endocrinology, Diabetology and Andrology Unit, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy.
| | - A Berruti
- Medical Oncology Unit, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, ASST Spedali Civili of Brescia, Brescia, Italy
| | - G Mazziotti
- Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, 20090, Pieve Emanuele, MI, Italy.
- Endocrinology, Diabetology and Andrology Unit, IRCCS Humanitas Research Hospital, Rozzano, MI, Italy.
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26
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Cherdantseva LA, Anastasieva EA, Egorikhina MN, Aleynik DY, Medvedchikov AE, Sharkeev YP, Kirilova IA. The Effect of Structural Characteristics of Deproteinized Spongy Bone on Activity of Adipose Tissue Mesenchymal Stromal Cells. Bull Exp Biol Med 2024; 176:515-518. [PMID: 38492109 DOI: 10.1007/s10517-024-06058-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Indexed: 03/18/2024]
Abstract
We studied the effect of structural properties of deproteinized spongy bone (DSB) on functional activity of adipose tissue mesenchymal stromal cells of (MSC) for the potential use of these materials as components of a combined tissue-engineered construct. The porosity of the structure of DSB samples and the pore size promote MSC adhesion, migration, and proliferation on their surface and in the depth, revealing the architectonics of this bone matrix. The depth of cell penetration into the samples (from 273 to 702 μm) and an increase in the total number of cells (from 302 on day 1 to 1744 on day 7) demonstrated MSC adhesion, migration, and proliferation. The viability of cultured MSC was preserved for up to 7 days. The obtained results prove the possibility of using allogeneic DSB from femoral heads as a bone matrix in tissue-engineered constructs in combination with MSC. Such constructs can be used to efficiently restore the structural and functional integrity of the bone tissue in abnormal processes of various etiopathogenesis associated with the formation of bone defects or bone tissue deficiency.
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Affiliation(s)
- L A Cherdantseva
- Ya. L. Tsivyan Novosibirsk Research Institute of Traumatology and Orthopedics, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - E A Anastasieva
- Ya. L. Tsivyan Novosibirsk Research Institute of Traumatology and Orthopedics, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - M N Egorikhina
- Privolzhsky Research Medical University, Ministry of Health of the Russian Federation, Nizhny Novgorod, Russia
| | - D Ya Aleynik
- Privolzhsky Research Medical University, Ministry of Health of the Russian Federation, Nizhny Novgorod, Russia
| | - A E Medvedchikov
- Ya. L. Tsivyan Novosibirsk Research Institute of Traumatology and Orthopedics, Ministry of Health of the Russian Federation, Novosibirsk, Russia
| | - Yu P Sharkeev
- Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia
| | - I A Kirilova
- Ya. L. Tsivyan Novosibirsk Research Institute of Traumatology and Orthopedics, Ministry of Health of the Russian Federation, Novosibirsk, Russia.
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Zhou Y, Höglund L, Samanta A, Procter P, Persson C. Hydroxyapatite particle shape affects screw attachment in cancellous bone when augmented with hydroxyapatite-containing hydrogels. J Mech Behav Biomed Mater 2024; 150:106241. [PMID: 37995601 DOI: 10.1016/j.jmbbm.2023.106241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/31/2023] [Accepted: 11/11/2023] [Indexed: 11/25/2023]
Abstract
Screw-bone construct failures are a true challenge in orthopaedic implant fixation, particularly in poor quality bone. Whilst augmentation with bone cement can improve the primary stability of screws, there are cements, e.g. PMMA, that may impede blood flow and nutrients and hamper bone remodelling. In this study, soft, non-setting biomaterials based on Hyalectin gels and hydroxyapatite (HA) particles with different morphological parameters were evaluated as potential augmentation materials, using a lapine ex vivo bone model. The pull-out force, stiffness, and work to fracture were considered in evaluating screw attachment. The pull-out force of constructs reinforced with Hyalectin containing irregularly shaped nano-HA and spherically shaped micro-HA particles were found to be significantly higher than the control group (no augmentation material). The pull-out stiffness increased for the micro-HA particles and the work to fracture increased for the irregular nano-HA particles. However, there were no significant augmentation effect found for the spherical shaped nano-HA particles. In conclusion, injectable Hyalectin gel loaded with hydroxyapatite particles was found to have a potentially positive effect on the primary stability of screws in trabecular bone, depending on the HA particle shape and size.
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Affiliation(s)
- Yijun Zhou
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Uppsala University, Sweden
| | - Lisa Höglund
- Division of Macromolecular Chemistry, Department of Chemistry-Ångström, Uppsala University, Uppsala, Sweden
| | - Ayan Samanta
- Division of Macromolecular Chemistry, Department of Chemistry-Ångström, Uppsala University, Uppsala, Sweden
| | - Philip Procter
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Uppsala University, Sweden
| | - Cecilia Persson
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Uppsala University, Sweden.
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Tsai PC, Liu YC, Chang TK, Chen LP, Huang YC, Lian YS, Chien KT. The novel Kambin Torpedo full-endoscopic lumbar interbody fusion technique: a case series. Eur Spine J 2024; 33:417-428. [PMID: 37389696 DOI: 10.1007/s00586-023-07836-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 05/10/2023] [Accepted: 06/19/2023] [Indexed: 07/01/2023]
Abstract
PURPOSE Full-endoscopic lumbar interbody fusion (FELIF) is a new-generation treatment for spondylolisthesis. However, owing to their unique characteristics, the two main endoscopic fusion trajectories, the trans-Kambin and posterolateral approaches, have important limitations. Herein, we aimed to introduce a new technique called Kambin Torpedo FELIF (KT-FELIF). METHODS The KT-FELIF technique is based on the trans-Kambin approach. It additionally completes ipsilateral total facetectomy and contralateral direct decompression. Thus, this novel technique combines the advantages of the trans-Kambin and posterolateral approaches. RESULTS We reported on the indications and technical steps of KT-FELIF and provided intraoperative and animated videos to clarify the procedure. Short-term follow-up based on 3-month postoperative computed tomography and plain films images taken at least 3 months after surgery showed adequate bony decompression, a large bone graft contact area, and good intervertebral trabecular bone growth without radiolucent lines between the graft, cage, and end plate. The clinical results, such as ipsilateral and contralateral visual analog scale and Oswestry disability index values, gradually improved at 1 and 3 months postoperatively. No complications were observed. CONCLUSIONS KT-FELIF is a promising FELIF technique for achieving bilateral direct decompression through a unilateral approach while accomplishing thorough discectomy and endplate preparation.
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Affiliation(s)
- Ping-Chi Tsai
- Department of Medical Education, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist, Taipei City, 104217, Taiwan
| | - Yueh-Ching Liu
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Ting-Kuo Chang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Lei-Po Chen
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Yu-Ching Huang
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Yan-Shiang Lian
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan
| | - Kai-Ting Chien
- Department of Orthopaedic Surgery, MacKay Memorial Hospital, No. 92, Sec. 2, Zhongshan N. Rd., Zhongshan Dist., Taipei City, 104217, Taiwan.
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Reisinger AG, Bittner-Frank M, Thurner PJ, Pahr DH. The 2-layer elasto-visco-plastic rheological model for the material parameter identification of bone tissue extended by a damage law. J Mech Behav Biomed Mater 2024; 150:106259. [PMID: 38039773 DOI: 10.1016/j.jmbbm.2023.106259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 10/24/2023] [Accepted: 11/16/2023] [Indexed: 12/03/2023]
Abstract
The response of bone tissue to mechanical load is complex and includes plastic hardening, viscosity and damage. The quantification of these effects plays a mayor role in bone research and in biomechanical clinical trials as to better understand related diseases. In this study, the damage growth in individual wet human trabeculae subjected to cyclic overloading is quantified by inverse rheological modeling. Therefore, an already published rheological material model, that includes linear elasticity, plasticity and viscosity is extended by a damage law. The model is utilized in an optimization process to identify the corresponding material parameters and damage growth in single human trabeculae under tensile load. Results show that the damage model is leading to a better fit of the test data with an average root-mean-square-error (RMSE) of 2.52 MPa compared to the non-damage model with a RMSE of 3.03 MPa. Although this improvement is not significant, the damage model qualitatively better represents the data as it accounts for the visible stiffness reduction along the load history. It returns realistic stiffness values of 11.92 GPa for the instantaneous modulus and 5.73 GPa for the long term modulus of wet trabecular human bone. Further, the growth of damage in the tissue along the load history is substantial, with values above 0.8 close to failure. The relative loss of stiffness per cycle is in good agreement with comparable literature. Inverse rheological modeling proves to be a valuable tool for quantifying complex constitutive behavior from a single mechanical measurement. The evolution of damage in the tissue can be identified continuously over the load history and separated from other effects.
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Affiliation(s)
- Andreas G Reisinger
- Department of Anatomy and Biomechanics, Karl Landsteiner University of Health Sciences, Austria; Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, Austria.
| | - Martin Bittner-Frank
- Department of Anatomy and Biomechanics, Karl Landsteiner University of Health Sciences, Austria; Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, Austria
| | - Philipp J Thurner
- Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, Austria
| | - Dieter H Pahr
- Department of Anatomy and Biomechanics, Karl Landsteiner University of Health Sciences, Austria; Institute of Lightweight Design and Structural Biomechanics, Vienna University of Technology, Austria
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Li X, Lou Y, Hu W, Wang K, Zhang Y, Xu R, Zhang T, Yang W, Qian Y. Activation of TAZ by XMU-MP-1 inhibits osteoclastogenesis and attenuates ovariectomy-induced cancellous bone loss. Biochem Biophys Res Commun 2024; 692:149323. [PMID: 38043154 DOI: 10.1016/j.bbrc.2023.149323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 11/09/2023] [Accepted: 11/22/2023] [Indexed: 12/05/2023]
Abstract
Osteoporosis is a metabolic bone loss disorder usually accompanied by overactivated osteoclast formation and increased bone resorption. Transcriptional co-activator with PDZ-binding motif (TAZ) is an emerging potential target for the treatment of osteoporosis. Our previous research showed that TAZ overexpression inhibited osteoclast formation while TAZ silencing had the opposite effect. In addition, TAZ knockout in mouse osteoclasts induced osteoporosis in animal experiments. XMU-MP-1 (XMU) is a selective MST1/2 inhibitor that can theoretically activate TAZ; however, its effect on osteoporosis remains unknown. In this study, we found that XMU treatment significantly increased TAZ expression in osteoclasts and inhibited osteoclast formation in vitro; however, this inhibitory effect was eliminated after the deletion of TAZ. Furthermore, XMU treatment upregulated TAZ expression in osteoclasts and alleviated ovariectomy (OVX)-induced osteoporosis in bilateral OVX mouse models. These findings suggest that XMU can effectively activate TAZ and that pharmacological activation of TAZ may be a promising option for the treatment of osteoporosis.
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Affiliation(s)
- Xinyu Li
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China; Department of Orthopaedics, The Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310000, China
| | - Yun Lou
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Wenjun Hu
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Kelei Wang
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Yufeng Zhang
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Rongjian Xu
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Tan Zhang
- Department of Orthopedics, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing, Zhejiang, 312000, China
| | - Wanlei Yang
- Department of Orthopaedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China.
| | - Yu Qian
- Department of Orthopaedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, 310006, China.
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Nie T, Venkatesh VS, Golub S, Stok KS, Hemmatian H, Desai R, Handelsman DJ, Zajac JD, Grossmann M, Davey RA. Estradiol increases cortical and trabecular bone accrual and bone strength in an adolescent male-to-female mouse model of gender-affirming hormone therapy. Bone Res 2024; 12:1. [PMID: 38212599 PMCID: PMC10784310 DOI: 10.1038/s41413-023-00308-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 01/13/2024] Open
Abstract
The effects of gender-affirming hormone therapy on the skeletal integrity and fracture risk in transitioning adolescent trans girls are unknown. To address this knowledge gap, we developed a mouse model to simulate male-to-female transition in human adolescents in whom puberty is first arrested by using gonadotrophin-releasing hormone analogs with subsequent estradiol treatment. Puberty was suppressed by orchidectomy in male mice at 5 weeks of age. At 3 weeks post-surgery, male-to-female mice were treated with a high dose of estradiol (~0.85 mg) by intraperitoneal silastic implantation for 12 weeks. Controls included intact and orchidectomized males at 3 weeks post-surgery, vehicle-treated intact males, intact females and orchidectomized males at 12 weeks post-treatment. Compared to male controls, orchidectomized males exhibited decreased peak bone mass accrual and a decreased maximal force the bone could withstand prior to fracture. Estradiol treatment in orchidectomized male-to-female mice compared to mice in all control groups was associated with an increased cortical thickness in the mid-diaphysis, while the periosteal circumference increased to a level that was intermediate between intact male and female controls, resulting in increased maximal force and stiffness. In trabecular bone, estradiol treatment increased newly formed trabeculae arising from the growth plate as well as mineralizing surface/bone surface and bone formation rate, consistent with the anabolic action of estradiol on osteoblast proliferation. These data support the concept that skeletal integrity can be preserved and that long-term fractures may be prevented in trans girls treated with GnRHa and a sufficiently high dose of GAHT. Further study is needed to identify an optimal dose of estradiol that protects the bone without adverse side effects.
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Affiliation(s)
- Tian Nie
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Varun S Venkatesh
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Suzanne Golub
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Kathryn S Stok
- Department of Biomedical Engineering, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Haniyeh Hemmatian
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Reena Desai
- ANZAC Research Institute, University of Sydney and Andrology, Concord Repatriation General Hospital, Concord, NSW, 2137, Australia
| | - David J Handelsman
- ANZAC Research Institute, University of Sydney and Andrology, Concord Repatriation General Hospital, Concord, NSW, 2137, Australia
| | - Jeffrey D Zajac
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Mathis Grossmann
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia
| | - Rachel A Davey
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, VIC, 3084, Australia.
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Castro-Sandoval JC, Chavez A, Corona-Castuera J, Henao J, Rivera-Gil MA, Poblano-Salas CA. Additive manufactured gyroid-based cell structures under compression: design, testing and simulation for biomedical applications. Comput Methods Biomech Biomed Engin 2024; 27:211-221. [PMID: 36790389 DOI: 10.1080/10255842.2023.2179366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 02/07/2023] [Indexed: 02/16/2023]
Abstract
The mechanical behaviour of a DMLS Ti-6Al-4V gyroid-based cellular structure (CS), with potential application in the fabrication of implants, was studied under compressive conditions. The influence of the CS volumetric fraction on the elastic modulus was experimentally evaluated in cubic and cylindrical samples. The experimental results showed that the selected parameters allowed approximating the mechanical behaviour of the CS to that of trabecular bone. Finite element analysis was employed to study the mechanical behaviour of the CS. The model presented a good approximation of the experimental results, being useful to predict the mechanical behaviour of the CS.
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Wang Z, Liao B, Liu Y, Liao Y, Zhou Y, Li W. Influence of structural parameters of 3D-printed triply periodic minimal surface gyroid porous scaffolds on compression performance, cell response, and bone regeneration. J Biomed Mater Res B Appl Biomater 2024; 112:e35337. [PMID: 37795764 DOI: 10.1002/jbm.b.35337] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/19/2023] [Accepted: 09/18/2023] [Indexed: 10/06/2023]
Abstract
In this study, multi-scale triply periodic minimal surface (TPMS) porous scaffolds with uniform and radial gradient distribution on pore size were printed based on the selective laser melting technology, and the influences of porosity, pore size and radial pore size distribution on compression mechanical properties, cell behavior, and bone regeneration behavior were analyzed. The results showed that the compression performance of the uniform porous scaffolds with high porosity was similar to that of cancellous bone of pig tibia, and the gradient porous scaffolds have higher elastic modulus and compressive toughness. After 4 days of cell culture, cells were distributed on the surface of scaffolds mostly, and the number of adherent cells was higher on the small pore size porous scaffolds; After 7 days, the area and density of cell proliferation on the scaffolds were improved; After 14 days, the cells on the small pore size scaffolds tended to migrate to adjacent pores. Animal implantation experiments showed that collagen fiber osteoid was intermittent on scaffolds with high porosity and large pore size, which was not conducive to bone formation. The appropriate pore size and porosity of bone regeneration were 792 um and 83%, respectively, and the regenerative ability of gradient pore size was better than that of uniform pore size. Our study explains the rules of TPMS gyroid structure parameters on compression performance, cell response and bone regeneration, and provides a reference value for the design of bone repair scaffolds for clinical orthopedics.
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Affiliation(s)
- Zhenglun Wang
- Tribology Research Institute, Key Laboratory for Advanced Technology of Materials of Ministry of Education, Southwest Jiaotong University, Chengdu, China
| | - Bo Liao
- Tribology Research Institute, Key Laboratory for Advanced Technology of Materials of Ministry of Education, Southwest Jiaotong University, Chengdu, China
| | - Yongsheng Liu
- State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua, China
- R & D Center for High-end Parts, Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd., Chengdu, China
| | - Yunqian Liao
- Tribology Research Institute, Key Laboratory for Advanced Technology of Materials of Ministry of Education, Southwest Jiaotong University, Chengdu, China
| | - Yu Zhou
- Tribology Research Institute, Key Laboratory for Advanced Technology of Materials of Ministry of Education, Southwest Jiaotong University, Chengdu, China
| | - Wei Li
- Tribology Research Institute, Key Laboratory for Advanced Technology of Materials of Ministry of Education, Southwest Jiaotong University, Chengdu, China
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Shuhart C, Cheung A, Gill R, Gani L, Goel H, Szalat A. Executive Summary of the 2023 Adult Position Development Conference of the International Society for Clinical Densitometry: DXA Reporting, Follow-up BMD Testing and Trabecular Bone Score Application and Reporting. J Clin Densitom 2024; 27:101435. [PMID: 38007332 DOI: 10.1016/j.jocd.2023.101435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
After 15 months of preparation by task force chairs and teams, ISCD's 9th Position Development Conference (PDC) convened in Northbrook, IL, USA on March 28th and 29th, 2023 to approve new ISCD Official Positions in the topic areas of DXA Reporting, Follow-up BMD Testing and TBS Application and Reporting. Three teams of participants work to bring the PDC to fruition: the Steering Committee, Task Forces and Chairs, and the Expert Panel. To reach agreement on draft Official Positions, the PDC follows a scripted process with the UCLA/RAND Appropriateness Method (UCLA/RAM) as its foundation. Multiple rounds of data review, public debate and voting resulted in 32 new or modified Official Positions. Six companion position papers are also published along with this Executive Summary, serving as the detailed substantiation for the Official Positions. This Executive Summary reviews the personnel groups, activities and products of the 2023 PDC, with the entirety of the updated 2023 Official Positions presented in Appendix A. New Official Positions are highlighted in bold.
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Affiliation(s)
- Christopher Shuhart
- Swedish Bone Health and Osteoporosis Center, Swedish Medical Group, Seattle, WA, USA.
| | - Angela Cheung
- Centre of Excellence in Skeletal Health Assessment, University of Toronto, Toronto, Ontario, Canada; Osteoporosis Program, University Health Network and Sinai Health System, Toronto, Ontario, Canada
| | - Ranjodh Gill
- Endocrinology Service, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA; Endocrine Division, Virginia Commonwealth University School of Medicine, Richmond, VA, USA
| | - Linsey Gani
- Department of Endocrinology, Changi General Hospital, Singapore
| | | | - Auryan Szalat
- Osteoporosis Center, Internal Medicine Ward, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
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Ju X, Zhou C, Liang J, Tao W, Liang L, Xu Y. Efficient nonlinear homogenization of bones using a cluster-based model order reduction technique. Int J Numer Method Biomed Eng 2024; 40:e3784. [PMID: 37944589 DOI: 10.1002/cnm.3784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/26/2023] [Accepted: 10/02/2023] [Indexed: 11/12/2023]
Abstract
We present a reduced order model for efficient nonlinear homogenization of bones, accounting for strength difference effects and containing some well-known plasticity models (like von Mises or Drucker-Prager) as special cases. The reduced order homogenization is done by using a cluster-based model order reduction technique, called cluster-based nonuniform transformation field analysis. For an offline phase, a space-time decomposition is performed on the mesoscopic plastic strain fields, while a clustering analysis is employed for a spatial decomposition of the mesoscale RVE model. A volumetric-deviatoric split is additionally introduced to capture the enriched characteristics of the mesoscopic plastic strain fields. For an online analysis, the reduced order model is formulated in a unified minimization problem, which is compatible with a large variety of material models. Both cortical and trabecular bones are considered for numerical experiments. Compared to conventional FE-based RVE computations, the developed reduced order model renders a considerable acceleration rate beyond10 3 , while maintaining a sufficient accuracy level.
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Affiliation(s)
- Xiaozhe Ju
- Taizhou Hospital of Zhejiang Province, Linhai, China
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
- School of Aeronautics and Astronautics, Zhejiang University, Hangzhou, China
| | - Chenbin Zhou
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Junbo Liang
- Taizhou Hospital of Zhejiang Province, Linhai, China
| | - Weiming Tao
- School of Aeronautics and Astronautics, Zhejiang University, Hangzhou, China
| | - Lihua Liang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Yangjian Xu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou, China
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Omichi Y, Mima N, Wada K, Okada R, Tamaki Y, Hamada D, Goto T, Morimoto M, Enomoto T, Hayashi H, Sairyo K. Can TBS reference values be a valid indicator for clinical vertebral fracture? A cross-sectional study. J Bone Miner Metab 2024; 42:60-68. [PMID: 38057602 DOI: 10.1007/s00774-023-01476-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 10/17/2023] [Indexed: 12/08/2023]
Abstract
INTRODUCTION Trabecular bone score (TBS) is partially independent of fracture risk. Reference values for TBS have not been established in official guidelines, and thus clinicians often have difficulty interpreting TBS results. This study aimed to investigate whether reference values for TBS could be a valid indicator for clinical vertebral fracture (CVF). MATERIALS AND METHODS This cross-sectional study involved 231 women with CVF and 563 women without CVF aged 60-90 years who underwent dual-energy X-ray absorptiometry during 2019-2023. They were divided into osteoporosis, osteopenia, and normal groups according to bone mineral density of the lumbar spine. Reference values for TBS were defined as low (≤ 1.23), intermediate (1.23-1.31), and high (≥ 1.31). RESULTS Among patients without anti-osteoporosis treatment (n = 476), the proportion with low TBS was 36.7% in the CVF group and 10.7% in the control group. The proportion with CVF was higher in the low TBS group than in the intermediate and high TBS groups, especially in the osteoporosis group (p < 0.001). The odds ratio for CVF was higher in the low TBS group than in the intermediate and high especially in patients with normal BMD and osteoporosis. The TBS cut-off values for incidence of CVF in the osteoporosis, osteopenia, and normal groups were 1.224, 1.319, and 1.322, respectively. CONCLUSIONS The reference value for low TBS (≤ 1.23) was useful as an indicator for CVF, especially in patients with osteoporosis. It is expected that reference values for TBS will be established in official guidelines in the future.
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Affiliation(s)
- Yasuyuki Omichi
- Department of Orthopedics, Tokushima Municipal Hospital, 2-34 Kitajousanjima, Tokushima, 770-0812, Japan.
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan.
- Department of Orthopedics, Mima Hospital, Yoshinogawa, Japan.
| | - Noriaki Mima
- Department of Orthopedics, Mima Hospital, Yoshinogawa, Japan
| | - Keizo Wada
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Ryo Okada
- Department of Orthopedics, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - Yasuaki Tamaki
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Daisuke Hamada
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Tomohiro Goto
- Department of Orthopedics, Tokushima Municipal Hospital, 2-34 Kitajousanjima, Tokushima, 770-0812, Japan
| | - Masatoshi Morimoto
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | | | - Hiroki Hayashi
- Department of Radiology, Mima Hospital, Yoshinogawa, Japan
| | - Koichi Sairyo
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Assif L, Chirchir H. Trabecular bone morphology in big cats reflects the complex diversity of limb use but not home range size or daily travel distance. Anat Rec (Hoboken) 2024; 307:208-222. [PMID: 37676091 DOI: 10.1002/ar.25302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 09/08/2023]
Abstract
A relationship exists between mechanical loading and bone morphology. Although studies show a relationship between trabecular bone morphology and locomotor strategy in mammals, none of them have studied trabecular bone morphology in felid species occupying disparate and overlapping habitats. We investigate trabecular bone volume fraction (BVF) in the femoral and humeral heads, and distal tibia of four felid species (mountain lions, jaguars, cheetahs, and leopards) to identify whether there is a relationship between BVF and locomotor behavior. This study's goals are to identify whether felid species with high daily travel distance or large home range size have greater BVF compared with those with small daily travel distance or home range size, and whether BVF is correlated among the three elements of the fore and hindlimb studied. We quantified BVF in micro- and peripheral computed tomography images and found no significant differences across species in the femoral and humeral head (p > 0.05). However, in the distal tibia, results showed that leopards, mountain lions, and cheetahs have significantly greater (p < 0.05) BVF than jaguars. Despite differences in home range size and daily travel distance, the proximal elements did not reflect differences in BVF; however, the distal-most element did, suggesting decreased loading among jaguars. These findings suggest that the observed pattern of trabecular bone morphology is potentially due to the diversity in locomotor strategy of the forelimb. Additionally, these results imply that neither home range size nor daily travel distance are clear indicators of activity levels. A cautious approach is warranted in studying how loading influences trabecular morphology.
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Affiliation(s)
- Layne Assif
- Department of Biological Sciences, Marshall University, Huntington, West Virginia, USA
| | - Habiba Chirchir
- Department of Biological Sciences, Marshall University, Huntington, West Virginia, USA
- Human Origins Program, Department of Anthropology, National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
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Trandafir AI, Gheorghe AM, Sima OC, Ciuche A, Petrova E, Nistor C, Carsote M. Cross-Disciplinary Approach of Adrenal Tumors: Insights into Primary Aldosteronism-Related Mineral Metabolism Status and Osteoporotic Fracture Risk. Int J Mol Sci 2023; 24:17338. [PMID: 38139166 PMCID: PMC10743397 DOI: 10.3390/ijms242417338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/28/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
Our objective was to overview the novel aspects in the field of adrenal gland neoplasms, namely, the management of bone status with respect to primary aldosteronism (PA). In the current narrative review, a PubMed study was conducted from inception until June 2023. The inclusion criteria were: human (clinically relevant) studies of any study design (at least 10 patients per study); English papers; and the following combination of key words within the title and/or abstract: "aldosterone" AND "bone", "skeleton", "osteoporosis", "fracture", "calcium", "parathyroid", "DXA", "osteocalcin", "P1NP", "alkaline phosphatase", "bone marker", "trabecular bone score", or "FRAX". The exclusion criteria were in vitro or animal studies, reviews, and case reports/series. We screened 1027 articles and finally included 23 studies (13 of case-control type, 3 cross-sectional, 5 prospective, 1 observational cohort, and 1 retrospective study). The assessments provided in these studies were as follows: nine studies addressed Dual-Energy X-ray Absorptiometry (DXA), another study pointed out a bone microarchitecture evaluation underlying trabecular bone score (TBS), and seven studies investigated the bone turnover markers (BTMs) profile. Moreover, 14 studies followed the subjects after adrenalectomy versus medical treatment, and 21 studies addressed secondary hyperparathyroidism in PA patients. According to our study on published data during a period of almost 40 years (n = 23, N = 3965 subjects aged between 38 and 64, with a mean age 56.75, and a female-to-male ratio of 1.05), a higher PTH in PA versus controls (healthy persons or subjects with essential hypertension) is expected, secondary hyperparathyroidism being associated in almost half of the adults diagnosed with PA. Additionally, mineral metabolism anomalies in PA may include lower serum calcium and higher urinary calcium output, all these three parameters being reversible under specific therapy for PA, regardless medical or surgical. The PA subgroup with high PTH seems at higher cardiovascular risk, while unilateral rather than bilateral disease was prone to this PTH anomaly. Moreover, bone mineral density (BMD) according to central DXA might show a higher fracture risk only in certain adults, TBS being a promising alternative (with a still unknown perspective of diabetes' influence on DXA-TBS results in PA). However, an overall increased fracture prevalence in PA is described in most studies, especially with respect to the vertebral site, the fracture risk that seems correctable upon aldosterone excess remission. These data recommend PA as a cause of secondary osteoporosis, a treatable one via PA intervention. There is still an area of debate the way to address BMTs profile in PA, the case's selection toward specific bone evaluation in every day practice, and further on, the understanding of the potential genetic influence at the level of bone and mineral complications in PA patients.
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Affiliation(s)
- Alexandra-Ioana Trandafir
- PhD Doctoral School, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.-I.T.); (O.-C.S.)
- Department of Endocrinology, C.I. Parhon National Institute of Endocrinology, 011683 Bucharest, Romania
| | - Ana-Maria Gheorghe
- PhD Doctoral School, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.-I.T.); (O.-C.S.)
- Department of Endocrinology, C.I. Parhon National Institute of Endocrinology, 011683 Bucharest, Romania
| | - Oana-Claudia Sima
- PhD Doctoral School, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (A.-I.T.); (O.-C.S.)
- Department of Endocrinology, C.I. Parhon National Institute of Endocrinology, 011683 Bucharest, Romania
| | - Adrian Ciuche
- Department 4—Cardio-Thoracic Pathology, Thoracic Surgery II Discipline, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Thoracic Surgery Department, “Dr. Carol Davila” Central Emergency University Military Hospital, 010825 Bucharest, Romania
| | - Eugenia Petrova
- Department of Endocrinology, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (E.P.); (M.C.)
- Clinical Endocrinology Department, C.I. Parhon National Institute of Endocrinology, 011683 Bucharest, Romania
| | - Claudiu Nistor
- Department 4—Cardio-Thoracic Pathology, Thoracic Surgery II Discipline, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania;
- Thoracic Surgery Department, “Dr. Carol Davila” Central Emergency University Military Hospital, 010825 Bucharest, Romania
| | - Mara Carsote
- Department of Endocrinology, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (E.P.); (M.C.)
- Clinical Endocrinology Department, C.I. Parhon National Institute of Endocrinology, 011683 Bucharest, Romania
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Li Y, Tan J, Tian J, Xu J, Shao H, Zhang J, Zhao T, Huang Y. Cross-sectional analysis of the correlation between serum uric acid and trabecular bone score: NHANES 2005-2008. Sci Rep 2023; 13:21546. [PMID: 38057416 PMCID: PMC10700542 DOI: 10.1038/s41598-023-48739-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 11/29/2023] [Indexed: 12/08/2023] Open
Abstract
Serum uric acid (SUA) has been discovered to be associated with bone mineral density (BMD), but its relationship with trabecular bone score (TBS) remains unclear. Thus, the aim of our study was to investigate the association between SUA levels and TBS. Our study included 5895 individuals over 20 years old (3061 men and 2834 women) from NHANES 2005-2008. To analyze the association between SUA and TBS, multivariate linear regression models with covariate adjustments were applied. Furthermore, population description, stratified analysis, single factor analysis, smooth curve fitting, interaction analysis, and threshold effect and saturation effect analysis were also conducted. After adjusting for covariates, SUA showed a strong negative relationship with total TBS (β = 0.319; 95% CI 0.145-0.494; P < 0.001). The relationship between SUA levels and total TBS was found to be nonlinear, with inflection points at 4.8 mg/dL for the overall population, 4.2 mg/dL for women, and 5.7 mg/dL for non-Hispanic whites, indicating a saturation effect. Additionally, no interactions were found in any of the subgroups. Our study found a negative association between SUA and total TBS in adults. Maintaining SUA at a saturated level can benefit in preventing osteoporosis and fractures.
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Affiliation(s)
- Yanlei Li
- Center for Plastic & Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Shangtang Road 158#, Hangzhou, 310014, Zhejiang, China
| | - Jinxin Tan
- Department of Orthopedics, Zhejiang Medical & Health Group Hangzhou Hospital, Hangzhou, Zhejiang, China
| | - Jinlong Tian
- Center for Plastic & Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Shangtang Road 158#, Hangzhou, 310014, Zhejiang, China
| | - Jiongnan Xu
- Center for Plastic & Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Shangtang Road 158#, Hangzhou, 310014, Zhejiang, China
| | - Haiyu Shao
- Center for Plastic & Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Shangtang Road 158#, Hangzhou, 310014, Zhejiang, China
| | - Jun Zhang
- Center for Plastic & Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Shangtang Road 158#, Hangzhou, 310014, Zhejiang, China
| | - Tingxiao Zhao
- Center for Plastic & Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Shangtang Road 158#, Hangzhou, 310014, Zhejiang, China.
| | - Yazeng Huang
- Center for Plastic & Reconstructive Surgery, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Shangtang Road 158#, Hangzhou, 310014, Zhejiang, China.
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Li H, Zhang X, Ameer KA, Zhang X, Du W, Mei S, Li X. Clinical observation of concentrated growth factor (CGF) combined with iliac cancellous bone and composite bone material graft on postoperative osteogenesis and inflammation in the repair of extensive mandibular defects. J Stomatol Oral Maxillofac Surg 2023; 124:101472. [PMID: 37061040 DOI: 10.1016/j.jormas.2023.101472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 04/12/2023] [Indexed: 04/17/2023]
Abstract
PURPOSE To evaluate the effects of concentrated growth factor (CGF), combined with a mixture of iliac cancellous and composite bone materials, on the repair of extensive mandibular defects. PATIENTS AND METHODS This clinical trial involved patients with mandibular defects caused by large cystic lesions. The test group comprised 16 patients who underwent CGF combined with iliac cancellous bone and composite bone materials to repair extensive mandibular defects, whereas the control group comprised eight patients who underwent vascularised free fibula grafts for mandibular segmental defects. Postoperative exudatum was collected from patients on the 1st, 2nd, 3rd, and 4th days postoperatively, and osteogenic factor, including alkaline phosphatase (ALP), osteocalcin (BGP), and procollagen type I N-terminal propeptide (PINP), and inflammatory cytokines were performed. Additionally, regular cone beam computed tomography (CBCT) scans were conducted before and after surgery. RESULTS On postoperative days 1-4, the expression levels of ALP, BGP, and PINP were higher in the test group, while those of IL-1α, IL-1β, IL-6, IL-8, and TNF-α, which were identified as co-differentially expressing inflammatory cytokines, were all down-regulated in the exudatum of the test group. Regular CBCT radiological scans revealed a significant osteogenic effect in the test group. CONCLUSION The use of CGF combined with iliac cancellous bone and composite bone materials to repair extensive mandibular jaw defects facilitates bone formation and reductions in inflammation in the defect area in the short term, which deserves further research in clinical practice.
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Affiliation(s)
- Haiyang Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University & Hebei Key Laboratory of Stomatology & Hebei Clinical Research Center for Oral Diseases, Shijiazhuang, 050017, China
| | - Xiaoyan Zhang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University & Hebei Key Laboratory of Stomatology & Hebei Clinical Research Center for Oral Diseases, Shijiazhuang, 050017, China
| | - Khan Anas Ameer
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University & Hebei Key Laboratory of Stomatology & Hebei Clinical Research Center for Oral Diseases, Shijiazhuang, 050017, China
| | - Xiao Zhang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University & Hebei Key Laboratory of Stomatology & Hebei Clinical Research Center for Oral Diseases, Shijiazhuang, 050017, China
| | - Wenya Du
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University & Hebei Key Laboratory of Stomatology & Hebei Clinical Research Center for Oral Diseases, Shijiazhuang, 050017, China
| | - Shuang Mei
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University & Hebei Key Laboratory of Stomatology & Hebei Clinical Research Center for Oral Diseases, Shijiazhuang, 050017, China
| | - Xiangjun Li
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Hebei Medical University & Hebei Key Laboratory of Stomatology & Hebei Clinical Research Center for Oral Diseases, Shijiazhuang, 050017, China.
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Zhou Y, Isaksson P, Persson C. An improved trabecular bone model based on Voronoi tessellation. J Mech Behav Biomed Mater 2023; 148:106172. [PMID: 37852087 DOI: 10.1016/j.jmbbm.2023.106172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/17/2023] [Accepted: 10/09/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND AND OBJECTIVE Accurate numerical and physical models of trabecular bone, correctly representing its complexity and variability, could be highly advantageous in the development of e.g. new bone-anchored implants due to the limited availability of real bone. Several Voronoi tessellation-based porous models have been reported in the literature, attempting to mimic the trabecular bone. However, these models have been limited to lattice rod-like structures, which are only structurally representative of very high-porosity trabecular bone. The objective of this study was to provide an improved model, more representative of trabecular bone of different porosity. METHODS Boolean operations were utilized to merge scaled Voronoi cells, thereby introducing different structural patterns, controlling porosity and to some extent anisotropy. The mechanical properties of the structures were evaluated using analytical estimations, numerical simulations, and experimental compression tests of 3D-printed versions of the structures. The capacity of the developed models to represent trabecular bone was assessed by comparing some key geometric features with trabecular bone characterized in previous studies. RESULTS The models gave the possibility to provide pore interconnectivity at relatively low porosities as well as both plate- and rod-like structures. The mechanical properties of the generated models were predictable with numerical simulations as well as an analytical approach. The permeability was found to be better than Sawbones at the same porosity. The models also showed the capability of matching e.g. some vertebral structures for key geometric features. CONCLUSIONS An improved numerical model for mimicking trabecular bone structures was successfully developed using Voronoi tessellation and Boolean operations. This is expected to benefit both computational and experimental studies by providing a more diverse and representative structure of trabecular bone.
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Affiliation(s)
- Yijun Zhou
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Uppsala University, Box 35, Uppsala, 75121, Sweden.
| | - Per Isaksson
- Division of Applied Mechanics, Department of Materials Science and Engineering, Uppsala University, Box 35, Uppsala, 75121, Sweden.
| | - Cecilia Persson
- Division of Biomedical Engineering, Department of Materials Science and Engineering, Uppsala University, Box 35, Uppsala, 75121, Sweden.
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Hong N, Shin S, Lee S, Rhee Y. Romosozumab is associated with greater trabecular bone score improvement compared to denosumab in postmenopausal osteoporosis. Osteoporos Int 2023; 34:2059-2067. [PMID: 37596432 DOI: 10.1007/s00198-023-06889-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 08/11/2023] [Indexed: 08/20/2023]
Abstract
In this study, romosozumab demonstrated significantly greater improvement in trabecular bone score compared to denosumab therapy in postmenopausal women previously treated with antiresorptive agents. Notably, in patients previously treated with anti-resorptive agents, treatment with romosozumab resulted in similar increases in trabecular bone score compared to that of drug-naïve patients. PURPOSE Romosozumab significantly increases bone mineral density (BMD) and rapidly reduces fracture risk. Whether romosozumab can improve the spinal trabecular bone score (TBS) as a bone quality indicator merits further investigation. METHODS Data for postmenopausal women starting romosozumab or denosumab treatment at Severance Hospital, Korea, were analyzed. Romosozumab and denosumab groups were 1:1 matched using propensity scores, considering relevant covariates. Good responders were defined as those with TBS improvement of 5.8% or greater. RESULTS Overall, 174 patients (romosozumab, n = 87; denosumab, n = 87) were analyzed. Matched groups did not differ in age (64 years), weight, height, previous fracture (38%), lumbar spine or femoral neck BMD (T-score, -3.4 and -2.6, respectively), or prior bisphosphonate or selective estrogen receptor modulator (SERM) exposure (50%). The romosozumab group exhibited a greater increase in lumbar spine BMD (15.2% vs. 6.9%, p < 0.001) and TBS (3.7% vs. 1.7%, p = 0.013) than the denosumab group. In patients transitioning from bisphosphonate or SERM, romosozumab users showed greater improvement in TBS compared to denosumab users (3.9% versus 0.8%, P = 0.006); the drug-naive group showed no significant difference (3.6% versus 2.7%, P = 0.472). The romosozumab group had a higher proportion of good responders than the denosumab group (33.3% vs. 18.4%, p = 0.024). Romosozumab therapy for 12 months resulted in 3.8-fold higher odds of a good response in TBS than denosumab after covariate adjustment (adjusted odds ratio 3.85, p = 0.002). CONCLUSION Romosozumab could improve bone mass and bone quality, measured by TBS, in postmenopausal osteoporosis, particularly as a subsequent regimen in patients previously taking anti-resorptive agents.
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Affiliation(s)
- Namki Hong
- Division of Endocrinology, Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Sungjae Shin
- Division of Endocrinology, Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
- Division of Endocrinology, Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 10444, Korea
| | - Seunghyun Lee
- Division of Endocrinology, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, 26426, Republic of Korea
| | - Yumie Rhee
- Division of Endocrinology, Department of Internal Medicine, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
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Minematsu A, Nishii Y. Prevention of bone deterioration by whole-body vibration in a rat model of pre-type 2 diabetes. J Musculoskelet Neuronal Interact 2023; 23:426-435. [PMID: 38037361 PMCID: PMC10696377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Accepted: 10/14/2023] [Indexed: 12/02/2023]
Abstract
OBJECTIVES To examine effects of whole-body vibration (WBV) on bone properties in pre-type 2 diabetes mellitus (T2DM) rats. METHODS Six-week-old male Hos:ZFDM-Lepr fa, fa/fa (DM) and Hos:ZFDM-Leprfa,fa/+ (CON; untreated non-DM) rats were used in the experiments. Half of DM rats were subjected to WBV (45 Hz, 0.5 g, 15 min/day, 5 days/week) for 8 weeks (WBV group), and the other half was not (DM group). RESULTS Bone mass, trabecular bone microstructure (TBMS), and cortical bone geometry (CBG) parameters were worse in the DM and WBV groups compared with the CON group. Maximum load was significantly decreased in the DM group compared with the CON group, and the break point was significantly higher in the WBV group compared with the DM group. Serum levels of bone specific alkaline phosphatase were significantly lower in the WBV group compared with the CON group. Glycemic control was not worse in the WBV group compared with the DM group, but not the same levels as the CON group. CONCLUSIONS These findings suggest that WBV can potentially delay the decrease in maximum load, although it does not prevent the deterioration of bone mass, TBMS, and CBG parameters.
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Affiliation(s)
- Akira Minematsu
- Department of Physical Therapy, Faculty of Health Science, Kio University, Japan
| | - Yasue Nishii
- Department of Physical Therapy, Faculty of Health Science, Kio University, Japan
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Ding K, Zhu Y, Li J, Yuwen P, Yang W, Zhang Y, Wang H, Ren C, Chen W, Zhang Q, Zhang Y. Age-related Changes with the Trabecular Bone of Ward's Triangle and Neck-shaft Angle in the Proximal Femur: A Radiographic Study. Orthop Surg 2023; 15:3279-3287. [PMID: 37853985 PMCID: PMC10694024 DOI: 10.1111/os.13923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 10/20/2023] Open
Abstract
OBJECTIVE The Ward triangle is an important area used clinically to diagnose and assess osteoporosis and its fracture risk in the proximal femur. The main objective of this study was to investigate the rules of development and maturation of the trabeculae of Ward's triangle to provide a basis for the prevention and treatment proximal femur fracture. METHODS From January 2018 to December 2019, individuals from 4 months to 19 years old who underwent hip growth and development assessments at the Third Hospital of Hebei Medical University were selected retrospectively. The outpatient electronic medical record system was used to collect information such as age, gender, imaging images, and clinical diagnosis. The development score and maturity characteristics of the trabecular bone were analyzed using hip radiograph data. Correlation analysis was performed to identify the relationship among age, neck-shaft angle and development and maturity score of the trabecular bone. RESULTS A total of 941 patients were enrolled in this study, including 539 males and 402 females. Primary compression trabeculae were all present at 1 year of age and matured at 7 years of age and older; primary tension trabeculae were all present at 4 years of age and matured at 18 years of age. Secondary compression trabeculae were present at 4 years of age and matured at 18 years of age. In addition, the neck-shaft angle progressively decreases from 4 months to 14 years of age but barely changes between 15 and 19 years of age. CONCLUSION In short, the development and maturation of the trabeculae in the ward' triangle followed a specific temporal pattern that was related to the neck-shaft angle. Therefore, these findings can help us understand structure and mechanical characteristics of proximal femoral trabeculae, and improve our understanding of the mechanism and treatment of proximal femoral fractures.
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Affiliation(s)
- Kai Ding
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Yanbin Zhu
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Jiaxing Li
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Peizhi Yuwen
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Weijie Yang
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Yifan Zhang
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Haicheng Wang
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Chuan Ren
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Wei Chen
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Qi Zhang
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
| | - Yingze Zhang
- Department of Orthopaedic Surgery, Hebei Orthopaedic Clinical Research CenterThe Third Hospital of Hebei Medical UniversityShijiazhuangChina
- Key Laboratory of Biomechanics of Hebei ProvinceOrthopaedic Research Institute of Hebei ProvinceHebeiChina
- NHC Key Laboratory of Intelligent Orthopaedic Equipment (The Third Hospital of Hebei Medical University)ShijiazhuangChina
- Engineering Research Center of Orthopaedic Minimally Invasive Intelligent EquipmentMinistry of EducationShijiazhuangChina
- Chinese Academy of EngineeringBingjiaokou HutongBejingChina
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Moga RA, Olteanu CD, Botez MD, Buru SM, Delean AG. Effects of Increasing the Orthodontic Forces over Cortical and Trabecular Bone during Periodontal Breakdown-A Finite Elements Analysis. Medicina (Kaunas) 2023; 59:1964. [PMID: 38004013 PMCID: PMC10672812 DOI: 10.3390/medicina59111964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 10/30/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023]
Abstract
Background and Objectives: Herein we used numerical analysis to study different biomechanical behaviors of mandibular bone subjected to 0.6 N, 1.2 N, and 2.4 N orthodontic loads during 0-8 mm periodontal breakdown using the Tresca failure criterion. Additionally, correlations with earlier FEA reports found potential ischemic and resorptive risks. Materials and Methods: Eighty-one models (nine patients) and 243 simulations (intrusion, extrusion, rotation, tipping, and translation) were analyzed. Results: Intrusion and extrusion displayed after 4 mm bone loss showed extended stress display in the apical and middle third alveolar sockets, showing higher ischemic and resorptive risks for 0.6 N. Rotation, translation, and tipping displayed the highest stress amounts, and cervical-third stress with higher ischemic and resorptive risks after 4 mm loss for 0.6 N. Conclusions: Quantitatively, rotation, translation, and tipping are the most stressful movements. All three applied forces produced similar stress-display areas for all movements and bone levels. The stress doubled for 1.2 N and quadrupled for 2.4 N when compared with 0.6 N. The differences between the three loads consisted of the stress amounts displayed in color-coded areas, while their location and extension remained constant. Since the MHP was exceeded, a reduction in the applied force to under 0.6 N (after 4 mm of bone loss) is recommended for reducing ischemic and resorptive risks. The stress-display pattern correlated with horizontal periodontal-breakdown simulations.
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Affiliation(s)
- Radu-Andrei Moga
- Department of Cariology, Endodontics and Oral Pathology, School of Dental Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Str. Motilor 33, 400001 Cluj-Napoca, Romania;
| | - Cristian Doru Olteanu
- Department of Orthodontics, School of Dental Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Str. Avram Iancu 31, 400083 Cluj-Napoca, Romania
| | - Mircea Daniel Botez
- Department of Structural Mechanics, School of Civil Engineering, Technical University of Cluj-Napoca, Str. Memorandumului 28, 400114 Cluj-Napoca, Romania; (M.D.B.); (S.M.B.)
| | - Stefan Marius Buru
- Department of Structural Mechanics, School of Civil Engineering, Technical University of Cluj-Napoca, Str. Memorandumului 28, 400114 Cluj-Napoca, Romania; (M.D.B.); (S.M.B.)
| | - Ada Gabriela Delean
- Department of Cariology, Endodontics and Oral Pathology, School of Dental Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, Str. Motilor 33, 400001 Cluj-Napoca, Romania;
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Canteri AL, Gusmon LB, Boguszewski CL, Borba VZC. Bone quality, mineral density, and fractures in heart failure. PLoS One 2023; 18:e0293903. [PMID: 37922295 PMCID: PMC10624280 DOI: 10.1371/journal.pone.0293903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/20/2023] [Indexed: 11/05/2023] Open
Abstract
BACKGROUND The trabecular bone score (TBS) indirectly estimates bone quality and predicts low-impact fractures independently of bone mineral density (BMD). However, there is still a paucity of data linking bone and heart diseases, mainly with gaps in the TBS analysis. METHODS In this cross-sectional study, we evaluated TBS, BMD, and fractures in patients with heart failure with reduced ejection fraction (HFrEF) and in sex-, BMI- and age-matched controls, and we assessed the fracture probability using the FRAX tool, considering active search for fractures by vertebral fracture assessment (VFA) and the adjustment for the TBS. RESULTS TBS values were 1.296 ± 0.14 in 85 patients (43.5% women; age 65 ± 13 years) and 1.320 ± 0.11 in 142 controls (P = 0.07), being reduced (< 1.31) in 51.8% and 46.1% of them, respectively (P = 0.12). TBS was lower in patients than in the controls when BMD was normal (P = 0.04) and when the BMI was 15-37 kg/m2 (P = 0.03). Age (odds ratio [OR] 1.05; P = 0.026), albumin (OR 0.12; P = 0.046), statin use (OR 0.27; P = 0.03), and energy intake (OR 1.03; P = 0.014) were associated with reduced TBS. Fractures on VFA occurred in 42.4% of the patients, and VFA and TBS adjustment increased the fracture risk by 16%-23%. CONCLUSION Patients with HFrEF had poor bone quality, with a better discriminating impact of the TBS assessment when BMD was normal, and BMI was suitable for densitometric analysis. Variables related to the prognosis, severity, and treatment of HFrEF were associated with reduced TBS. VFA and TBS adjustment increased fracture risk.
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Affiliation(s)
- Andre Luiz Canteri
- Division of Cardiology, Department of Internal Medicine, Hospital de Clínicas, Federal University of Paraná, Curitiba, Paraná State, Brazil
- Health Sciences and Internal Medicine Postgraduation Department, Federal University of Paraná, Curitiba, Paraná State, Brazil
| | - Luana Bassan Gusmon
- Division of Cardiology, Department of Internal Medicine, Hospital de Clínicas, Federal University of Paraná, Curitiba, Paraná State, Brazil
| | - Cesar Luiz Boguszewski
- Health Sciences and Internal Medicine Postgraduation Department, Federal University of Paraná, Curitiba, Paraná State, Brazil
- Endocrine Division (SEMPR), Department of Internal Medicine, Federal University of Paraná, Curitiba, Paraná State, Brazil
| | - Victoria Zeghbi Cochenski Borba
- Health Sciences and Internal Medicine Postgraduation Department, Federal University of Paraná, Curitiba, Paraná State, Brazil
- Endocrine Division (SEMPR), Department of Internal Medicine, Federal University of Paraná, Curitiba, Paraná State, Brazil
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Lai Y, Chuanqing M, Zhiyu C, Chengyong W, Meng L, Jing L, Chen WH. Comparison of two preserved cartilage iliac crest cortical- cancellous bone blocks graft harvesting techniques in children: A prospective, double-blind, randomized clinical trial. J Craniomaxillofac Surg 2023; 51:716-722. [PMID: 37821308 DOI: 10.1016/j.jcms.2023.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/06/2023] [Accepted: 09/30/2023] [Indexed: 10/13/2023] Open
Abstract
PURPOSE To compare donor-site morbidity for alveolar bone grafting results following cartilage-preserving outer and inner cortico-cancellous iliac crest (OCIC and ICIC) bone block grafting in children. MATERIALS AND METHODS Patients were randomly divided into two groups and prospectively reviewed. In the OCIC and ICIC groups, cortico-cancellous bone blocks were harvested at outer and inner iliac crest respectively. Patient characteristics and surgical parameters were compared; pain intensity and duration, lateral femoral cutaneous nerve (LFCN) injury, gait disturbance, scar and contour satisfaction were analysed postoperatively. RESULTS Forty-nine consecutive patients (OCIC, 24; ICIC, 25) were included. There were no significant differences in patient characteristics or donor-site surgical parameters. The mean pain score on the first post-operative day was significantly lower in the OCIC group (3.75±1.70) than in the ICIC group (5.20±2.08) (p=0.012). The pain duration was similar in the two groups (median: 5 days). Temporary LFCN injury only occurred in 3 patients in the ICIC group. Postoperatively, the duck and circle gaits were observed in the OCIC and ICIC groups, respectively. There were no significant differences in the claudication duration, scar and contour satisfaction between the groups. CONCLUSION OCIC bone graft harvesting is marginally advantageous in children due to less early postoperative donor-site pain and a lower risk of nerve damage.
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Affiliation(s)
- Yongzhen Lai
- Department of Oral and Cranio-maxillofacial Science, Fujian Medical University Union Hospital, No. 28, Xinquan Road, Fuzhou City, 350001, Fujian Province, China; Stomatological Key Laboratory of Fujian College and University, Fuzhou, China
| | - Mao Chuanqing
- Department of Oral and Cranio-maxillofacial Science, Fujian Medical University Union Hospital, No. 28, Xinquan Road, Fuzhou City, 350001, Fujian Province, China
| | - Cai Zhiyu
- Department of Oral and Cranio-maxillofacial Science, Fujian Medical University Union Hospital, No. 28, Xinquan Road, Fuzhou City, 350001, Fujian Province, China
| | - Wang Chengyong
- Department of Oral and Cranio-maxillofacial Science, Fujian Medical University Union Hospital, No. 28, Xinquan Road, Fuzhou City, 350001, Fujian Province, China
| | - Lu Meng
- Department of Oral and Cranio-maxillofacial Science, Fujian Medical University Union Hospital, No. 28, Xinquan Road, Fuzhou City, 350001, Fujian Province, China
| | - Liu Jing
- Department of Stomatology, Fujian Maternal and Child Health Hospital, No 18 Dao Shan Road, Fuzhou City, 350001, Fujian Province, China
| | - Wei Hui Chen
- Department of Oral and Cranio-maxillofacial Science, Fujian Medical University Union Hospital, No. 28, Xinquan Road, Fuzhou City, 350001, Fujian Province, China.
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Shabaan AA, Salahuddin A, Aboulmagd I, Ragab R, Salah KA, Rashid A, Ayad HM, El Aty Ahmed WA, Refahee SM. Alveolar cleft reconstruction using bone marrow aspirate concentrate and iliac cancellous bone: A 12-month randomized clinical study. Clin Oral Investig 2023; 27:6667-6675. [PMID: 37794139 PMCID: PMC10630224 DOI: 10.1007/s00784-023-05276-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 09/23/2023] [Indexed: 10/06/2023]
Abstract
OBJECTIVE This study aimed to compare the bone density and volume in patients with alveolar cleft reconstructions utilizing bone marrow aspirate concentrate with iliac graft versus iliac graft alone. MATERIAL AND METHODS Thirty-six patients with unilateral alveolar cleft were randomly allocated into either an intervention group receiving an iliac bone graft mixed with bone marrow concentrate or a control group receiving an iliac bone graft. Cone beam CT was obtained preoperative, 6 and 12 months postoperatively to assess the bone density of the graft and bone volume of the alveolar defect, and then, the bone loss ratio was calculated. RESULTS Bone volume and bone density demonstrated a statistically significant increase in the intervention group at 6 and 12 months. In contrast, the bone loss ratio decreased significantly in the intervention group throughout the follow-up period. CONCLUSION A combination of bone marrow concentrate and iliac cancellous bone in alveolar cleft reconstruction may improve bone densities and volume in addition to decreasing graft loss rate. CLINICAL SIGNIFICANCE Using of bone marrow aspirate concentrate will decrease the amount of the graft needed and decrease the ratio of bone loss at the grafted site by the time. Trial registration ClinicalTrials.org ( NCT04414423 ) 4/6/2020.
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Affiliation(s)
- Alshaimaa Ahmed Shabaan
- Oral & Maxillofacial Surgery Department, Faculty of Dentistry, Fayoum University, Fayoum, 63511, Egypt
| | - Ahmad Salahuddin
- Biochemistry Department, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
- Biochemistry Department, Faculty of Pharmacy, Al-Ayen university, Nasiriyah, Iraq
| | - Inass Aboulmagd
- Oral & Maxillofacial Radiology, Faculty of Dentistry, Fayoum University, Fayoum, 63511, Egypt
| | - Reham Ragab
- Biomedical Informatics and Medical Statistics Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Khaled Amr Salah
- Oral and Maxillofacial Surgery, Faculty of Dentistry, Cairo University, Cairo, 11111, Egypt
| | - Adel Rashid
- Orthodontics, Faculty of Dentistry, Fayoum University, Fayoum, 63511, Egypt
| | - Haytham Mohamed Ayad
- Oral & Maxillofacial Surgery Department, Faculty of Dentistry, Fayoum University, Fayoum, 63511, Egypt
| | - Walaa Abd El Aty Ahmed
- Oral and Maxillofacial Radiology, Faculty of Dentistry, Cairo University, Cairo, 11111, Egypt
| | - Shaimaa Mohsen Refahee
- Oral & Maxillofacial Surgery Department, Faculty of Dentistry, Fayoum University, Fayoum, 63511, Egypt.
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Hodgdon T, Thornhill RE, James ND, Melkus G, Beaulé PE, Rakhra KS. MRI texture analysis of acetabular cancellous bone can discriminate between normal, cam positive, and cam-FAI hips. Eur Radiol 2023; 33:8324-8332. [PMID: 37231069 DOI: 10.1007/s00330-023-09748-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/22/2023] [Accepted: 03/26/2023] [Indexed: 05/27/2023]
Abstract
OBJECTIVES To compare the MRI texture profile of acetabular subchondral bone in normal, asymptomatic cam positive, and symptomatic cam-FAI hips and determine the accuracy of a machine learning model for discriminating between the three hip classes. METHODS A case-control, retrospective study was performed including 68 subjects (19 normal, 26 asymptomatic cam, 23 symptomatic cam-FAI). Acetabular subchondral bone of unilateral hip was contoured on 1.5 T MR images. Nine first-order 3D histogram and 16 s-order texture features were evaluated using specialized texture analysis software. Between-group differences were assessed using Kruskal-Wallis and Mann-Whitney U tests, and differences in proportions compared using chi-square and Fisher's exact tests. Gradient-boosted ensemble methods of decision trees were created and trained to discriminate between the three groups of hips, with percent accuracy calculated. RESULTS Sixty-eight subjects (median age 32 (28-40), 60 male) were evaluated. Significant differences among all three groups were identified with first-order (4 features, all p ≤ 0.002) and second-order (11 features, all p ≤ 0.002) texture analyses. First-order texture analysis could differentiate between control and cam positive hip groups (4 features, all p ≤ 0.002). Second-order texture analysis could additionally differentiate between asymptomatic cam and symptomatic cam-FAI groups (10 features, all p ≤ 0.02). Machine learning models demonstrated high classification accuracy of 79% (SD 16) for discriminating among all three groups. CONCLUSION Normal, asymptomatic cam positive, and cam-FAI hips can be discriminated based on their MRI texture profile of subchondral bone using descriptive statistics and machine learning algorithms. CLINICAL RELEVANCE STATEMENT Texture analysis can be performed on routine MR images of the hip and used to identify early changes in bone architecture, differentiating morphologically abnormal from normal hips, prior to onset of symptoms. KEY POINTS • MRI texture analysis is a technique for extracting quantitative data from routine MRI images. • MRI texture analysis demonstrates that there are different bone profiles between normal hips and those with femoroacetabular impingement. • Machine learning models can be used in conjunction with MRI texture analysis to accurately differentiate between normal hips and those with femoroacetabular impingement.
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Affiliation(s)
- Taryn Hodgdon
- Ottawa Hospital Research Institute, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Rebecca E Thornhill
- Ottawa Hospital Research Institute, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Nick D James
- Department of Information Services, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Gerd Melkus
- Ottawa Hospital Research Institute, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Paul E Beaulé
- Department of Orthopaedic Surgery, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Kawan S Rakhra
- Ottawa Hospital Research Institute, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.
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Vaddi A, Tadinada A, Lurie A, Deymier A. Evaluation of near-infrared Raman spectroscopy in the differentiation of cortical bone, trabecular bone, and Bio-Oss bone graft: an ex-vivo study. Oral Surg Oral Med Oral Pathol Oral Radiol 2023; 136:632-639. [PMID: 37394288 DOI: 10.1016/j.oooo.2023.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 05/18/2023] [Accepted: 05/20/2023] [Indexed: 07/04/2023]
Abstract
OBJECTIVE We evaluated the ability of near-infrared Raman spectroscopy (near-IR RS) to differentiate among cortical bone, trabecular bone, and Bio-Oss, a bovinebone-based graft material. STUDY DESIGN We obtained a thinly sliced section of the mandible to collect cortical and trabecular bone samples and placed compacted Bio-Oss bone graft into a partially edentulous mandible in a dry human skull to obtain a comparable Bio-Oss sample. We performed near-IR RS of the 3 samples and evaluated the resultant Raman spectra to evaluate their differences. RESULTS We identified 3 sets of spectroscopic markers that differentiated Bio-Oss from human bone. The first consisted of significant shifts in the location of the 960 cm-1 phosphate (PO43-) peak and a reduction in its width, suggesting that Bio-Oss is more crystalline than bone. The second was the reduced carbonate content of Bio-Oss compared to bone, as determined from the 1070 cm-1/960 cm-1 peak area ratio. The final marker was the lack of collagen-associated peaks in Bio-Oss compared to cortical and trabecular bone. CONCLUSIONS Near-IR RS can reliably differentiate human cortical and trabecular bone from Bio-Oss via 3 sets of spectral markers associated with mineral crystallinity, carbonate content, and collagen content that differ significantly between them. Integrating this modality into dental practice may assist in implant treatment planning.
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Affiliation(s)
- Anusha Vaddi
- Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, UConn School of Dental Medicine, UConn Health, Farmington, CT, USA.
| | - Aditya Tadinada
- Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, UConn School of Dental Medicine, UConn Health, Farmington, CT, USA
| | - Alan Lurie
- Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, UConn School of Dental Medicine, UConn Health, Farmington, CT, USA
| | - Alix Deymier
- Department of Biomedical Engineering, UConn School of Dental Medicine, UConn Health, Farmington, CT, USA
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