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首页> 外文期刊>Advanced Science Letters >Evaluation of Unicompartmental Knee Arthroplasy Using a Finite Element Method
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Evaluation of Unicompartmental Knee Arthroplasy Using a Finite Element Method

机译：用有限元方法评估单室膝关节置换术

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摘要

The advanced development of unicompartmental knee arthroplasty (UKA) has provided patients with single compartment knee disease a treatment option besides high tibial osteotomy (HTO) and total knee arthroplasty (TKA). Previous clinical studies of UKA suggested osteolysis and aseptic loosening caused by the wear of polyethylene (PE) tibial components remained a problem. Further study and discussion should be conducted on the reduction and avoidance of the polyethylene tibial components damage. This study employed the finite element analysis. The results indicate that excessive activity and body weight and undercorrection of varus and tibial plateau malresection had contributed to the wear of polyethylene tibial components in unicompartmental knee prostheses (UKP). Of these, excessive activity and excessive body weight had more significant impact. The changes in thickness and angle of posterior slope had no significant impact on the wear of polyethylene tibial components. The results obtained from cross-tabulation analysis of multivariate showed that the achievement of the excellent long-term results and the reduction in the incidence of second replacement surgery relied on the evaluation of patients' body weight and daily activities in addition to the improvement in the accuracy of alignment between components and surgical precision. This study recommends that arthritis patients weighing more than 56 kg or the loading of unicompartment exceeding 800 N should not consider UKA as a treatment option at this stage.
机译：单室膝关节置换术（UKA）的先进发展为单室膝关节疾病患者提供了一种治疗选择，除了高胫骨截骨术（HTO）和全膝关节置换术（TKA）。 UKA的先前临床研究表明，聚乙烯（PE）胫骨组件磨损引起的骨溶解和无菌性松动仍然是一个问题。应就减少和避免聚乙烯胫骨组件损伤进行进一步的研究和讨论。本研究采用了有限元分析。结果表明，过度活动和体重以及内翻畸形和胫骨平台切除术的矫正不足，已导致单室膝关节假体（UKP）中聚乙烯胫骨组件的磨损。其中，过多的活动和过多的体重具有更大的影响。后倾斜的厚度和角度的变化对聚乙烯胫骨组件的磨损没有显着影响。从多变量的交叉列表分析中获得的结果表明，取得优异的长期效果和减少第二次置换手术的发生率，除了改善患者的体重和日常活动外，还取决于评估患者的体重和日常活动组件之间的对准精度和手术精度。这项研究建议，关节炎患者体重超过56千克或单室负荷超过800 N时，在此阶段不应考虑UKA作为治疗选择。

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