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日常生活活动中膝关节对线不良时Attune®固定平台交叉韧带替代型全膝关节置换植入物的负荷：有限元分析

Loading on Attune® fixed-bearing cruciate-substituting total knee implant in knee malalignment during activities of daily living: A finite element analysis.

作者信息

Shetty Gautam, Khairkar Shruti

机构信息

Knee & Orthopaedic Clinic, Mumbai, India.

AIMD Research, Mumbai, India.

出版信息

J Orthop. 2021 Jul 12;26:36-41. doi: 10.1016/j.jor.2021.07.002. eCollection 2021 Jul-Aug.

DOI:10.1016/j.jor.2021.07.002
PMID:34290486
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8280525/
Abstract

PURPOSE

To compare contact stresses between Attune® and PFC Sigma® total knee arthroplasty (TKA) implants in the presence of knee malalignment.

METHODS

Maximum contact stress after finite element analysis were compared during standing, walking, and stair climbing in 0°, 2.5° and 5°varus/valgus knee alignments.

RESULTS

The percentage increase in contact stress was highest during walking with PFC Sigma® in 5° varus (238.5%), standing with Attune® in 5° valgus (127.2%), and standing with Attune® in 2.5° valgus (107.8%).

CONCLUSION

The newer Attune® design may be associated with higher maximum contact stresses and increased risk of wear and implant failure.

摘要

目的

比较存在膝关节对线不良时Attune®和PFC Sigma®全膝关节置换（TKA）植入物之间的接触应力。

方法

在0°、2.5°和5°内翻/外翻膝关节对线情况下，比较站立、行走和爬楼梯时有限元分析后的最大接触应力。

结果

在5°内翻时使用PFC Sigma®行走期间接触应力增加百分比最高（238.5%），在5°外翻时使用Attune®站立期间（127.2%）以及在2.5°外翻时使用Attune®站立期间（107.8%）。

结论

新型的Attune®设计可能与更高的最大接触应力以及磨损和植入物失败风险增加有关。

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Ann Transl Med. 2020 Nov;8(21):1424. doi: 10.21037/atm-20-3011.
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J Arthroplasty. 2020 Oct;35(10):3010-3030. doi: 10.1016/j.arth.2020.05.039. Epub 2020 May 27.
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