Mechanical properties evaluation of metacarpophalangeal joint prosthesis with new titanium-nickel memory alloy: a cadaver study

BMC Musculoskeletal Disorders

Research

Meichao Zhang¹  Hongxin Shi²  Ling Yao³  Chuan Li³  Yongqing Xu³  Jun Li³  Tao Ye³  Xizong Zhou⁴  Minzheng Guo⁵  Xiangwen Shi⁵  Baochuang Qi⁵  Haonan Ni⁵  Junxiao Ren⁶ 

[1] Anatomy department, School of Basic Medical Science, Southern Medical University, No. 1023-1063 Shatai South Road, Baiyun District, 510515, Guangzhou, China;Dali University, 671003, Dali, China;Department of Orthopaedic, 920th Hospital of Joint Logistics Support Force, No. 212 Daguan Road, Xishan District, 650118, Kunming, China;Department of Orthopedics, Yanjin County Hospital, 657500, Zhaotong, China;Kunming Medical University, 650500, Kunming, China;Department of Orthopaedic, 920th Hospital of Joint Logistics Support Force, No. 212 Daguan Road, Xishan District, 650118, Kunming, China;Yunnan University of Chinese Medicine, 650500, Kunming, China;

关键词: Metacarpophalangeal joint;    Artificial joint;    Ni-Ti memory alloy;    Mechanical property;   

DOI  :  10.1186/s12891-023-06859-z

 received in 2023-05-31, accepted in 2023-09-06,  发布年份 2023

来源: Springer

【 摘 要 】

ObjectiveNi-Ti memory alloys are unusual materials for hard-tissue replacement because of their unique superelasticity, good biocompatibility, high strength, low specific gravity, low magnetism, wear resistance, corrosion resistance and fatigue resistance. The current study aims to evaluate its mechanical properties and provide biomechanical basis for the clinical application of the prosthesis.MethodsTen adult metacarpophalangeal joint specimens were randomly divided into a prosthesis group (n = 5, underwent metacarpophalangeal joint prosthesis) and a control group (n = 5, underwent sham operation). Firstly, the axial compression strength was tested with BOSE material testing machine to evaluate its biomechanical strength. Secondly, these specimens were tested for strain changes using BOSE material testing machine and GOM non-contact optical strain measurement system to evaluate the stress changes. Thirdly, fatigue test was performed between groups. Lastly, the mechanical wear of the metacarpophalangeal joint prosthesis was tested with ETK5510 material testing machine to study its mechanical properties.ResultsAxial compression stiffness in the prosthesis group was greater than that in the control group in terms of 30 ° and 60 ° flexion positions (P < 0.05). There was no statistically significant difference between two groups with regards to axial compression stiffness and stress change test (P > 0.05). In the fatigue wear test, the mean mass loss in the prosthesis group’s prosthesis was 17.2 mg and 17.619 mm3, respectively. The mean volume wear rate was 0.12%. There was no statistically significant difference in the maximum pull-out force of the metacarpal, phalangeal, and polymer polyethylene pads between the prosthesis group and the control group specimens.ConclusionsNi-Ti memory alloy metacarpophalangeal joint prosthesis conforms to the biomechanical characteristics of metacarpophalangeal joints without implants, and the fatigue strength can fully meet the needs of metacarpophalangeal joint activities after joint replacement.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

【 图 表 】

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