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Fu R, Bertrand D, Wang J, Kavaseri K, Feng Y, Du T, Liu Y, Willie BM, Yang H. In vivo and in silico monitoring bone regeneration during distraction osteogenesis of the mouse femur. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2022; 216:106679. [PMID: 35139460 DOI: 10.1016/j.cmpb.2022.106679] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 01/17/2022] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND OBJECTIVE Distraction osteogenesis (DO) is a mechanobiological process of producing new bone by gradual and controlled distraction of the surgically separated bone segments. Mice have been increasingly used to study the role of relevant biological factors in regulating bone regeneration during DO. However, there remains a lack of in silico DO models and related mechano-regulatory tissue differentiation algorithms for mouse bone. This study sought to establish an in silico model based on in vivo experimental data to simulate the bone regeneration process during DO of the mouse femur. METHODS In vivo micro-CT, including time-lapse morphometry was performed to monitor the bone regeneration in the distraction gap. A 2D axisymmetric finite element model, with a geometry originating from the experimental data, was created. Bone regeneration was simulated with a fuzzy logic-based two-stage (distraction and consolidation) mechano-regulatory tissue differentiation algorithm, which was adjusted from that used for fracture healing based on our in vivo experimental data. The predictive potential of the model was further tested with varied distraction frequencies and distraction rates. RESULTS The computational simulations showed similar bone regeneration patterns to those observed in the micro-CT data from the experiment throughout the DO process. This consisted of rapid bone formation during the first 10 days of the consolidation phase, followed by callus reshaping via bone remodeling. In addition, the computational model predicted a faster and more robust bone healing response as the model's distraction frequency was increased, whereas higher or lower distraction rates were not conducive to healing. CONCLUSIONS This in silico model could be used to investigate basic mechanobiological mechanisms involved in bone regeneration or to optimize DO strategies for potential clinical applications.
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Affiliation(s)
- Ruisen Fu
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - David Bertrand
- Department of Pediatric Surgery, McGill University, Montreal, Canada; Research Center, Shriners Hospital for Children-Canada, Montreal, Canada
| | - Jianing Wang
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Kyle Kavaseri
- Department of Pediatric Surgery, McGill University, Montreal, Canada; Research Center, Shriners Hospital for Children-Canada, Montreal, Canada
| | - Yili Feng
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Tianming Du
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Youjun Liu
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Bettina M Willie
- Department of Pediatric Surgery, McGill University, Montreal, Canada; Research Center, Shriners Hospital for Children-Canada, Montreal, Canada
| | - Haisheng Yang
- Department of Biomedical Engineering, Faculty of Environment and Life, Beijing University of Technology, 100 Pingleyuan, Chaoyang District, Beijing 100124, China.
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Freitag L, Günther C, Eberli U, Fürst A, Zeiter S, Stadelmann VA. Relative effects of age on implant integration in a rat model: A longitudinal in vivo microct study. J Orthop Res 2019; 37:541-552. [PMID: 30575124 DOI: 10.1002/jor.24210] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 12/11/2018] [Indexed: 02/04/2023]
Abstract
The effect of age on implant fixation in bone is not always considered during the design of preclinical models. The decision on animal's age is often related to practical or historical reasons, which ultimately may affect the reproducibility of results. This study aimed to quantify the effect of age by monitoring the fixation of contrast-enhanced PEEK screws in rats, hypothesizing that the kinetics of fixation is impaired in older animals but that age effects are less severe than osteoporotic effects. The time course of implant fixation was investigated in healthy rats at 24, 40, and 60 weeks of age; and in ovariectomized rats. Implant fixation was monitored using in-vivo microCT and dynamic histomorphometry during 1 month. The rats were euthanized 28 days post screw insertion. The data was analyzed both in absolute value and after normalization to baseline bone mass. In absolute terms, greater age had a detrimental effect on bone implant contact, bone fraction, implant stiffness, and bone remodeling but less than ovariectomy. Interestingly, once data was normalized to baseline bone mass this effect disappeared, suggesting that the physiologic response to implant placement was not affected by age. In conclusion, implant fixation kinetics is less affected by age than by baseline bone mass in this rat model. Animals of different ages can therefore be compared but data must be construed relatively to baseline bone mass and not in absolute terms. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 9999:1-12, 2018.
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Affiliation(s)
| | - Christian Günther
- AO Research Institute Davos, Davos, Switzerland.,Klinik für Pferdechirurgie, Vetsuisse-Fakultät der Universität Zürich, Zürich, Switzerland
| | | | - Anton Fürst
- Klinik für Pferdechirurgie, Vetsuisse-Fakultät der Universität Zürich, Zürich, Switzerland
| | | | - Vincent A Stadelmann
- AO Research Institute Davos, Davos, Switzerland.,Schulthess Clinic, Department of Research and Development, Zürich, Switzerland
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Broeckhoven C, Plessis A, Roux SG, Mouton PLFN, Hui C. Beauty is more than skin deep: a non‐invasive protocol for
in vivo
anatomical study using micro‐CT. Methods Ecol Evol 2016. [DOI: 10.1111/2041-210x.12661] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Chris Broeckhoven
- Department of Botany & Zoology Stellenbosch University Private Bag X1 Matieland 7602 Stellenbosch South Africa
- Theoretical Ecology Group Department of Mathematical Sciences Stellenbosch University Private Bag X1 Matieland 7602 Stellenbosch South Africa
| | - Anton Plessis
- CT Scanner Facility Central Analytical Facilities Stellenbosch University Matieland 7602 Stellenbosch South Africa
| | - Stephan Gerhard Roux
- CT Scanner Facility Central Analytical Facilities Stellenbosch University Matieland 7602 Stellenbosch South Africa
| | | | - Cang Hui
- Theoretical Ecology Group Department of Mathematical Sciences Stellenbosch University Private Bag X1 Matieland 7602 Stellenbosch South Africa
- Theoretical and Physical Biosciences African Institute for Mathematical Sciences Cape Town 7945 South Africa
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Zhao MD, Huang JS, Zhang XC, Gui KK, Xiong M, Yin WP, Yuan FL, Cai GP. Construction of Radial Defect Models in Rabbits to Determine the Critical Size Defects. PLoS One 2016; 11:e0146301. [PMID: 26731011 PMCID: PMC4701453 DOI: 10.1371/journal.pone.0146301] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 12/15/2015] [Indexed: 11/29/2022] Open
Abstract
Many studies aimed at investigating bone repair have been conducted through animal models in recent years. However, limitations do exist in these models due to varying regeneration potential among different animal species. Even using the same animal, big differences exist in the size of critical size defects (CSD) involving the same region. This study aimed to investigate the standardization of radial bone defect models in rabbits and further establish more reliable CSD data. A total of 40 6-month-old New Zealand white rabbits of clean grade totaling 80 radial bones were prepared for bone defect models, according to the principle of randomization. Five different sizes (1.0, 1.2, 1.4, 1.7 and 2.0 cm) of complete periosteal defects were introduced under anesthesia. At 12 weeks postoperatively, with the gradual increase in defect size, the grades of bone growth were significantly decreased in all 5 groups. X-ray, CT scans and H&E staining of the 1.4, 1.7, and 2.0-cm groups showed lower grades of bone growth than that of the 1.0 and 1.2-cm groups respectively (P < 0.05). Using rabbit radial defect model involving 6-month-old healthy New Zealand white rabbits, this study indicates that in order to be critical sized, defects must be greater than 1.4 cm.
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Affiliation(s)
- Ming-Dong Zhao
- Department of Orthopaedics, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Jian-Shu Huang
- Department of Occupational medicine, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Xin-Chao Zhang
- Department of Orthopaedics, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Ke-Ke Gui
- Department of Orthopaedics, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Min Xiong
- Department of Orthopaedics, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Wang-Ping Yin
- Department of Orthopaedics, Jinshan Hospital, Fudan University, Shanghai, 201508, China
| | - Feng-Lai Yuan
- Department of Orthopaedics and Central Laboratory, the third Hospital Affiliated to Nantong University, Wuxi, Jiangsu, 214041, China
- * E-mail: (GPC); (FLY)
| | - Guo-Ping Cai
- Department of Orthopaedics, Jinshan Hospital, Fudan University, Shanghai, 201508, China
- * E-mail: (GPC); (FLY)
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Ramalingam S, Al-Rasheed A, ArRejaie A, Nooh N, Al-Kindi M, Al-Hezaimi K. Guided bone regeneration in standardized calvarial defects using beta-tricalcium phosphate and collagen membrane: a real-time in vivo micro-computed tomographic experiment in rats. Odontology 2015; 104:199-210. [DOI: 10.1007/s10266-015-0211-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 12/01/2014] [Indexed: 10/23/2022]
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Improving the osteogenic efficacy of BMP2 with mechano growth factor by regulating the signaling events in BMP pathway. Cell Tissue Res 2015; 361:723-31. [DOI: 10.1007/s00441-015-2154-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 02/17/2015] [Indexed: 12/18/2022]
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