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Li X, Zhu L, Che Z, Liu T, Yang C, Huang L. Progress of research on the surface functionalization of tantalum and porous tantalum in bone tissue engineering. Biomed Mater 2024; 19:042009. [PMID: 38838694 DOI: 10.1088/1748-605x/ad5481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 06/05/2024] [Indexed: 06/07/2024]
Abstract
Tantalum and porous tantalum are ideal materials for making orthopedic implants due to their stable chemical properties and excellent biocompatibility. However, their utilization is still affected by loosening, infection, and peripheral inflammatory reactions, which sometimes ultimately lead to implant removal. An ideal bone implant should have exceptional biological activity, which can improve the surrounding biological microenvironment to enhance bone repair. Recent advances in surface functionalization have produced various strategies for developing compatibility between either of the two materials and their respective microenvironments. This review provides a systematic overview of state-of-the-art strategies for conferring biological functions to tantalum and porous tantalum implants. Furthermore, the review describes methods for preparing active surfaces and different bioactive substances that are used, summarizing their functions. Finally, this review discusses current challenges in the development of optimal bone implant materials.
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Affiliation(s)
- Xudong Li
- The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
| | - Liwei Zhu
- The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
| | - Zhenjia Che
- The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
| | - Tengyue Liu
- The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
| | - Chengzhe Yang
- The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
| | - Lanfeng Huang
- The Second Hospital of Jilin University, Changchun 130041, People's Republic of China
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García-Robledo H, García-Fernández L, Parra J, Martín-López R, Vázquez-Lasa B, de la Torre B. Ti/Ta-based composite polysaccharide scaffolds for guided bone regeneration in total hip arthroplasty. Int J Biol Macromol 2024; 271:132573. [PMID: 38782315 DOI: 10.1016/j.ijbiomac.2024.132573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/09/2024] [Accepted: 05/20/2024] [Indexed: 05/25/2024]
Abstract
Guided bone regeneration can play an important role in orthopedic applications. This work presents the synthesis and characterization of composite scaffolds based on polysaccharides loaded with microparticles of titanium or tantalum as novel materials proposed for composite systems with promising characteristics for guided bone regeneration. Ti/Ta composite scaffolds were synthesized using chitosan and gellan gum as organic substrates and crosslinked with oxidized dextran resulting in stable inorganic-organic composites. Physico-chemical characterization revealed a uniform distribution of metal nanoparticles within the scaffolds that showed a release of metals lower than 5 %. In vitro biological assays demonstrated that Ta composites exhibit a 2 times higher ALP activity than Ti and a higher capacity to support the full differentiation of human mesenchymal stem cells into osteoblasts. These results highlight their potential for bone regeneration applications.
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Affiliation(s)
- Hector García-Robledo
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain; Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcala de Henares, Spain; Service of Traumatology, University Hospital Ramón y Cajal, 28034 Madrid, Spain
| | - Luis García-Fernández
- Instituto de Ciencia y Tecnología de Polímeros (ICTP), CSIC, Spain; Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
| | - Juan Parra
- Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain; Complejo Asistencial de Ávila, SACYL, Ávila, Spain
| | | | - Blanca Vázquez-Lasa
- Instituto de Ciencia y Tecnología de Polímeros (ICTP), CSIC, Spain; Consorcio Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Basilio de la Torre
- Ramón y Cajal Institute of Sanitary Research (IRYCIS), 28034 Madrid, Spain; Department of Surgery, Medical and Social Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, 28801 Alcala de Henares, Spain; Service of Traumatology, University Hospital Ramón y Cajal, 28034 Madrid, Spain
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Ying J, Yu H, Cheng L, Li J, Wu B, Song L, Yi P, Wang H, Liu L, Zhao D. Research progress and clinical translation of three-dimensional printed porous tantalum in orthopaedics. BIOMATERIALS TRANSLATIONAL 2023; 4:166-179. [PMID: 38283089 PMCID: PMC10817782 DOI: 10.12336/biomatertransl.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 08/03/2022] [Accepted: 08/30/2023] [Indexed: 01/30/2024]
Abstract
With continuous developments in additive manufacturing technology, tantalum (Ta) metal has been manufactured into orthopaedic implants with a variety of forms, properties and uses by three-dimensional printing. Based on extensive research in recent years, the design, processing and performance aspects of this new orthopaedic implant material have been greatly improved. Besides the bionic porous structure and mechanical characteristics that are similar to human bone tissue, porous tantalum is considered to be a viable bone repair material due to its outstanding corrosion resistance, biocompatibility, bone integration and bone conductivity. Numerous in vitro, in vivo, and clinical studies have been carried out in order to analyse the safety and efficacy of these implants in orthopaedic applications. This study reviews the most recent advances in manufacturing, characteristics and clinical application of porous tantalum materials.
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Affiliation(s)
- Jiawei Ying
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Haiyu Yu
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Liangliang Cheng
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Junlei Li
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Bin Wu
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Liqun Song
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Pinqiao Yi
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Haiyao Wang
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Lingpeng Liu
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
| | - Dewei Zhao
- Department of Orthopaedics, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning Province, China
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Meng M, Wang J, Huang H, Liu X, Zhang J, Li Z. 3D printing metal implants in orthopedic surgery: Methods, applications and future prospects. J Orthop Translat 2023; 42:94-112. [PMID: 37675040 PMCID: PMC10480061 DOI: 10.1016/j.jot.2023.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 07/28/2023] [Accepted: 08/02/2023] [Indexed: 09/08/2023] Open
Abstract
Background Currently, metal implants are widely used in orthopedic surgeries, including fracture fixation, spinal fusion, joint replacement, and bone tumor defect repair. However, conventional implants are difficult to be customized according to the recipient's skeletal anatomy and defect characteristics, leading to difficulties in meeting the individual needs of patients. Additive manufacturing (AM) or three-dimensional (3D) printing technology, an advanced digital fabrication technique capable of producing components with complex and precise structures, offers opportunities for personalization. Methods We systematically reviewed the literature on 3D printing orthopedic metal implants over the past 10 years. Relevant animal, cellular, and clinical studies were searched in PubMed and Web of Science. In this paper, we introduce the 3D printing method and the characteristics of biometals and summarize the properties of 3D printing metal implants and their clinical applications in orthopedic surgery. On this basis, we discuss potential possibilities for further generalization and improvement. Results 3D printing technology has facilitated the use of metal implants in different orthopedic procedures. By combining medical images from techniques such as CT and MRI, 3D printing technology allows the precise fabrication of complex metal implants based on the anatomy of the injured tissue. Such patient-specific implants not only reduce excessive mechanical strength and eliminate stress-shielding effects, but also improve biocompatibility and functionality, increase cell and nutrient permeability, and promote angiogenesis and bone growth. In addition, 3D printing technology has the advantages of low cost, fast manufacturing cycles, and high reproducibility, which can shorten patients' surgery and hospitalization time. Many clinical trials have been conducted using customized implants. However, the use of modeling software, the operation of printing equipment, the high demand for metal implant materials, and the lack of guidance from relevant laws and regulations have limited its further application. Conclusions There are advantages of 3D printing metal implants in orthopedic applications such as personalization, promotion of osseointegration, short production cycle, and high material utilization. With the continuous learning of modeling software by surgeons, the improvement of 3D printing technology, the development of metal materials that better meet clinical needs, and the improvement of laws and regulations, 3D printing metal implants can be applied to more orthopedic surgeries. The translational potential of this paper Precision, intelligence, and personalization are the future direction of orthopedics. It is reasonable to believe that 3D printing technology will be more deeply integrated with artificial intelligence, 4D printing, and big data to play a greater role in orthopedic metal implants and eventually become an important part of the digital economy. We aim to summarize the latest developments in 3D printing metal implants for engineers and surgeons to design implants that more closely mimic the morphology and function of native bone.
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Affiliation(s)
- Meng Meng
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, PR China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Liaoning Province, PR China
| | - Jinzuo Wang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, PR China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Liaoning Province, PR China
| | - Huagui Huang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, PR China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Liaoning Province, PR China
| | - Xin Liu
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, PR China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Liaoning Province, PR China
| | - Jing Zhang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, PR China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Liaoning Province, PR China
| | - Zhonghai Li
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, PR China
- Key Laboratory of Molecular Mechanism for Repair and Remodeling of Orthopedic Diseases, Liaoning Province, PR China
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Subasi O, Karaismailoglu B, Ashkani-Esfahani S, Lazoglu I. Investigation of lattice infill parameters for additively manufactured bone fracture plates to reduce stress shielding. Comput Biol Med 2023; 161:107062. [PMID: 37235944 DOI: 10.1016/j.compbiomed.2023.107062] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Revised: 05/09/2023] [Accepted: 05/20/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND Stress shielding is a detrimental phenomenon caused by the stiffness mismatch between metallic bone plates and bone tissue, which can hamper fracture healing. Additively manufactured plates can decrease plate stiffness and alleviate the stress shielding effect. METHODS Rectilinear lattice plates with varying cell sizes, wall thicknesses, and orientations are computationally generated. Finite element analysis is used to calculate the four-point bending stiffness and strength of the plates. The mechanical behaviors of three different lattice plates are also simulated under a simple diaphyseal fracture fixation scenario. RESULTS The study shows that with different combinations of lattice infill parameters, plates with up to 68% decrease in stiffness compared to the 100% infill plate can be created. Moreover, in the fixation simulations, the least stiff lattice plate displays 53% more average stress distribution at the healing callus region compared to the 100% infill plate. CONCLUSIONS Using computational techniques, it has been demonstrated that additively manufactured stiffness-reduced bone plates can successfully address stress shielding with the strategic modulation of lattice infill parameters. Lattice plates with design versatility have the potential for use in various fracture fixation scenarios.
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Affiliation(s)
- Omer Subasi
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02493, USA; Manufacturing and Automation Research Center, Koc University, Istanbul, 34450, Turkey.
| | - Bedri Karaismailoglu
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02493, USA; Department of Orthopaedics and Traumatology, Istanbul University-Cerrahpasa, Istanbul, Turkey; CAST (Cerrahpasa Research Simulation and Design) Laboratory, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Soheil Ashkani-Esfahani
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02493, USA
| | - Ismail Lazoglu
- Manufacturing and Automation Research Center, Koc University, Istanbul, 34450, Turkey
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Wang X, Zhou K, Li Y, Xie H, Wang B. Preparation, modification, and clinical application of porous tantalum scaffolds. Front Bioeng Biotechnol 2023; 11:1127939. [PMID: 37082213 PMCID: PMC10110962 DOI: 10.3389/fbioe.2023.1127939] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/22/2023] [Indexed: 04/07/2023] Open
Abstract
Porous tantalum (Ta) implants have been developed and clinically applied as high-quality implant biomaterials in the orthopedics field because of their excellent corrosion resistance, biocompatibility, osteointegration, and bone conductivity. Porous Ta allows fine bone ingrowth and new bone formation through the inner space because of its high porosity and interconnected pore structure. It contributes to rapid bone integration and long-term stability of osseointegrated implants. Porous Ta has excellent wetting properties and high surface energy, which facilitate the adhesion, proliferation, and mineralization of osteoblasts. Moreover, porous Ta is superior to classical metallic materials in avoiding the stress shielding effect, minimizing the loss of marginal bone, and improving primary stability because of its low elastic modulus and high friction coefficient. Accordingly, the excellent biological and mechanical properties of porous Ta are primarily responsible for its rising clinical translation trend. Over the past 2 decades, advanced fabrication strategies such as emerging manufacturing technologies, surface modification techniques, and patient-oriented designs have remarkably influenced the microstructural characteristic, bioactive performance, and clinical indications of porous Ta scaffolds. The present review offers an overview of the fabrication methods, modification techniques, and orthopedic applications of porous Ta implants.
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Affiliation(s)
| | | | | | - Hui Xie
- *Correspondence: Hui Xie, ; Benjie Wang,
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Chen C, Huang B, Liu Y, Liu F, Lee IS. Functional engineering strategies of 3D printed implants for hard tissue replacement. Regen Biomater 2022; 10:rbac094. [PMID: 36683758 PMCID: PMC9845531 DOI: 10.1093/rb/rbac094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 10/20/2022] [Accepted: 10/27/2022] [Indexed: 11/27/2022] Open
Abstract
Three-dimensional printing technology with the rapid development of printing materials are widely recognized as a promising way to fabricate bioartificial bone tissues. In consideration of the disadvantages of bone substitutes, including poor mechanical properties, lack of vascularization and insufficient osteointegration, functional modification strategies can provide multiple functions and desired characteristics of printing materials, enhance their physicochemical and biological properties in bone tissue engineering. Thus, this review focuses on the advances of functional engineering strategies for 3D printed biomaterials in hard tissue replacement. It is structured as introducing 3D printing technologies, properties of printing materials (metals, ceramics and polymers) and typical functional engineering strategies utilized in the application of bone, cartilage and joint regeneration.
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Affiliation(s)
- Cen Chen
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Bo Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Yi Liu
- Department of Orthodontics, School of Stomatology, China Medical University, Shenyang 110002, PR China
| | - Fan Liu
- Department of Orthodontics, School of Stomatology, China Medical University, Shenyang 110002, PR China
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Hua L, Lei P, Hu Y. Knee Reconstruction Using 3D-Printed Porous Tantalum Augment in the Treatment of Charcot Joint. Orthop Surg 2022; 14:3125-3128. [PMID: 36056528 DOI: 10.1111/os.13484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 07/27/2022] [Accepted: 08/09/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Charcot joint disease is a rare neurogenic lesion of the joint characterized by progressive joint destruction with dislocation or subluxation. However, whether a joint replacement should be performed for severe joint damage is controversial. CASE PRESENTATION This paper reports a case of severe Charcot joint disease with a large bone defect that was treated with arthroplasty assisted by a customized 3D-printed porous tantalum. The patient was admitted to the hospital with a 9-year history of bilateral knee pain that had aggravated in the past 2 months. Radiography showed osteogeny and sclerosis in both knees, free bone fragments, heterotopic ossification, new bone, and osteophyte formation, irregular margins, apparent narrowing of joint space, and severe joint damage (Anderson Orthopedic Research Institute classification type III). Based on the present illness, history, imaging, and laboratory examination, Charcot joint disease was confirmed. Conservative treatment has been reported in the literature. There are limited reports on the surgical treatment of severe Charcot joint disease. We followed up with the patient for a year after the operation, and the imaging and clinical evaluation results were good. Postoperative X-ray examinations showed good alignment of force lines, good joint space, and no evidence of loosening. The patient was mobile and did not need crutches. CONCLUSIONS Through accurate surgical evaluation and preparation of 3D-printed porous tantalum implants, severe AORI classification type III Charcot joint disease can effectively restore the range of motion of the knee joint, the lower limb alignment, and finally achieve good functional results of walking without crutches.
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Affiliation(s)
- Long Hua
- Department of Orthopaedics, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, P. R. China.,Department of Orthopaedics, Xiangya Hospital Central South University, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, P. R. China.,Department of Orthopaedics, The Sixth Affiliated Hospital, Xinjiang Medical University, Urumqi, China
| | - Pengfei Lei
- Department of Orthopaedics, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, P. R. China.,Department of Orthopaedics, Xiangya Hospital Central South University, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, P. R. China
| | - Yihe Hu
- Department of Orthopaedics, The First Affiliated Hospital, Medical College of Zhejiang University, Hangzhou, P. R. China.,Department of Orthopaedics, Xiangya Hospital Central South University, Hunan Engineering Research Center of Biomedical Metal and Ceramic Implants, Changsha, P. R. China
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Mani G, Porter D, Grove K, Collins S, Ornberg A, Shulfer R. A comprehensive review of biological and materials properties of Tantalum and its alloys. J Biomed Mater Res A 2022; 110:1291-1306. [PMID: 35156305 DOI: 10.1002/jbm.a.37373] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 02/04/2022] [Indexed: 12/15/2022]
Abstract
Tantalum (Ta) and its alloys have been used for various cardiovascular, orthopedic, fracture fixation, dental, and spinal fusion implants. This review evaluates the biological and material properties of Ta and its alloys. Specifically, the biological properties including hemocompatibility and osseointegration, and material properties including radiopacity, MRI compatibility, corrosion resistance, surface characteristics, semiconductivity, and mechanical properties are covered. This review highlights how the material properties of Ta and its alloys contribute to its excellent biological properties for use in implants and medical devices.
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Affiliation(s)
- Gopinath Mani
- Division of Science and Technology, Abbott, St. Paul, Minnesota, USA
| | - Deanna Porter
- Division of Science and Technology, Abbott, St. Paul, Minnesota, USA
| | - Kent Grove
- Division of Science and Technology, Abbott, St. Paul, Minnesota, USA
| | - Shell Collins
- Division of Science and Technology, Abbott, St. Paul, Minnesota, USA
| | - Andreas Ornberg
- Division of Science and Technology, Abbott, St. Paul, Minnesota, USA
| | - Robert Shulfer
- Division of Science and Technology, Abbott, St. Paul, Minnesota, USA
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Huang G, Pan ST, Qiu JX. The Clinical Application of Porous Tantalum and Its New Development for Bone Tissue Engineering. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2647. [PMID: 34070153 PMCID: PMC8158527 DOI: 10.3390/ma14102647] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/06/2021] [Accepted: 05/13/2021] [Indexed: 12/13/2022]
Abstract
Porous tantalum (Ta) is a promising biomaterial and has been applied in orthopedics and dentistry for nearly two decades. The high porosity and interconnected pore structure of porous Ta promise fine bone ingrowth and new bone formation within the inner space, which further guarantee rapid osteointegration and bone-implant stability in the long term. Porous Ta has high wettability and surface energy that can facilitate adherence, proliferation and mineralization of osteoblasts. Meanwhile, the low elastic modulus and high friction coefficient of porous Ta allow it to effectively avoid the stress shield effect, minimize marginal bone loss and ensure primary stability. Accordingly, the satisfactory clinical application of porous Ta-based implants or prostheses is mainly derived from its excellent biological and mechanical properties. With the advent of additive manufacturing, personalized porous Ta-based implants or prostheses have shown their clinical value in the treatment of individual patients who need specially designed implants or prosthesis. In addition, many modification methods have been introduced to enhance the bioactivity and antibacterial property of porous Ta with promising in vitro and in vivo research results. In any case, choosing suitable patients is of great importance to guarantee surgical success after porous Ta insertion.
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Affiliation(s)
| | | | - Jia-Xuan Qiu
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China; (G.H.); (S.-T.P.)
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Zhang Z, Li Y, He P, Liu F, Li L, Zhang H, Ji P, Yang S. Nanotube-decorated hierarchical tantalum scaffold promoted early osseointegration. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2021; 35:102390. [PMID: 33857685 DOI: 10.1016/j.nano.2021.102390] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 01/24/2021] [Accepted: 03/16/2021] [Indexed: 01/28/2023]
Abstract
This study aimed to fabricate a hierarchical tantalum scaffold mimicking natural bone structure to enhance osseointegration. Porous tantalum scaffolds (p-Ta) with microgradients were fabricated by selective laser melting according to a computer-aided design model. Electrochemical anodization produced nanotubes on the p-Ta surface (p-Ta-nt). SEM verified the construction of a unique nanostructure on p-Ta-nt. Contact angle and protein adsorption measurements demonstrated that p-Ta-nt have enhanced hydrophilicity and protein absorption. MC3T3-E1 preosteoblasts showed increased filamentous pseudopods and comparable cell proliferation when cultured on p-Ta-nt. Osteogenic marker gene (Osterix, Runx2, COL-I) transcription was significantly upregulated in MC3T3-E1 cells cultured on p-Ta-nt after 7 days. After implantation into the femurs of New Zealand white rabbits for 2 weeks, histological examination found improved early osseointegration in the p-Ta-nt group. This study showed that a hierarchical tantalum structure could enhance early osteogenic effects in vitro and in vivo.
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Affiliation(s)
- Zhiyi Zhang
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yuzhou Li
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Ping He
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Fengyi Liu
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Lingjie Li
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - He Zhang
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.
| | - Ping Ji
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.
| | - Sheng Yang
- College of Stomatology, Chongqing Medical University, Chongqing, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.
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12
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Qian H, Lei T, Lei P, Hu Y. Additively Manufactured Tantalum Implants for Repairing Bone Defects: A Systematic Review. TISSUE ENGINEERING PART B-REVIEWS 2020; 27:166-180. [PMID: 32799765 DOI: 10.1089/ten.teb.2020.0134] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Tantalum has unique advantages as a biomaterial for repairing bone defects due to its outstanding bioactivity, excellent corrosion resistance, and mechanical properties. Ideal implants for bone repair should be of good biocompatibility and bioactivity, as well as ability to simulate the microstructure and mechanical environment of human bone tissues. Additive manufacturing can facilitate freedom of design for the macrostructure/microstructure of bone implants with controlled mechanical properties; thus, this method has great potential. Additively manufactured tantalum implants provide a novel alternative for bone repair and are gaining increasing attention. This systematic review aims to comprehensively summarize the subsistent evidence from physicochemical, cellular, animal, and clinical studies on additively manufactured tantalum implants in repairing bone defects, for the first time. This work may provide researchers an essential grasp on the advances of additively manufactured tantalum implants. Impact statement Tantalum has unique advantages as a biomaterial. Additive manufacturing facilitates design freedom and additively manufactured tantalum is a novel alternative for bone repair. Studies on additively manufactured tantalum progress greatly, while no review summarizing the progresses was published.
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Affiliation(s)
- Hu Qian
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China.,Xiangya School of Medicine, Central South University, Changsha, China
| | - Ting Lei
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China
| | - Pengfei Lei
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China
| | - Yihe Hu
- Department of Orthopedic Surgery, Xiangya Hospital of Central South University, Changsha, China
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Li M, Chang H, Wei N, Chang W, Yan Y, Jin Z, Chen W. Biomechanical Study on the Stress Distribution of the Knee Joint After Tibial Fracture Malunion with Residual Varus-Valgus Deformity. Orthop Surg 2020; 12:983-989. [PMID: 32462810 PMCID: PMC7307236 DOI: 10.1111/os.12668] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/04/2020] [Accepted: 03/11/2020] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE To investigate the effect of residual varus and valgus deformity on the stress distribution of the knee joint after tibial fracture malunion. METHODS Fourteen adult cadaver specimens were selected to establish the models of tibial fractures, which were fixed subsequently at neutral position (anatomical reduction) and malunion positions (at 5°, 10°, and 15° valgus positions, and 5°, 10°, and 15° varus positions). The stress distribution on the medial and lateral plateau of the tibia was quantitatively measured using ultra-low-pressure sensitive film technology. The changes in the stress distribution of the knee joint after tibial fracture malunion and the relationship between the stress values and the residual varus or valgus deformity were analyzed. RESULTS Under 400 N vertical load, the stress values on the medial and lateral plateau of the tibia at the neutral position were 1.137 ± 0.139 MPa and 1.041 ± 0.117 MPa, respectively. When compared with the stress values measured at the neutral position, the stress on the medial plateau of the tibia was significantly higher at varus deformities and lower at valgus deformities, and the stress on the lateral plateau was significantly higher at valgus deformities and lower at varus deformities (all P < 0.05). The stress values on the medial plateau of the tibia were significantly higher than the corresponding data on the lateral plateau at neutral and 5°, 10°, and 15° varus deformities, respectively (all P < 0.05), and significantly lower than the corresponding data on the lateral plateau at 5°, 10°, and 15° valgus deformities, respectively (all P < 0.05). CONCLUSION Residual varus and valgus deformity after tibial fracture malunion can lead to obvious changes of the stress distribution of the knee joint. Therefore, tibial fractures should be reduced anatomically and fixed rigidly to avoid residual varus-valgus deformity and malalignment of lower limbs.
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Affiliation(s)
- Ming Li
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hengrui Chang
- Department of Spine Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ning Wei
- Department of Orthopedic Surgery, The Fourth Hospital of Shijiazhuang, Shijiazhuang, China
| | - Wenli Chang
- Department of Orthopedic Surgery, Cangzhou Hospital of Integrated TCM-WM Hebei, Cangzhou, China
| | - Ying Yan
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zeyue Jin
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Wei Chen
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China.,Key Laboratory of Biomechanics of Hebei Province, Shijiazhuang, China
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