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首页> 外文期刊>Journal of Biomechanics >Effect of joint laxity on polyethylene wear in total knee replacement.
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Effect of joint laxity on polyethylene wear in total knee replacement.

机译：全膝关节置换中关节松弛对聚乙烯磨损的影响。

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摘要

Experimental simulator studies are frequently performed to evaluate wear behavior in total knee replacement. It is vital that the simulation conditions match the physiological situation as closely as possible. To date, few experimental wear studies have examined the effects of joint laxity on wear and joint kinematics and the absence of the anterior cruciate ligament has not been sufficiently taken into account in simulator wear studies. The aim of this study was to investigate different ligament and soft tissue models with respect to wear and kinematics. A virtual soft tissue control system was used to simulate different motion restraints in a force-controlled knee wear simulator. The application of more realistic and sophisticated ligament models that considered the absence of anterior cruciate ligament lead to a significant increase in polyethylene wear (p=0.02) and joint kinematics (p<0.01). We recommend the use of more complex ligament models to appropriately simulate the function of the human knee joint and to evaluate the wear behavior of total knee replacements. A feasible simulation model is presented.
机译：经常进行实验模拟器研究以评估全膝关节置换中的磨损行为。至关重要的是，模拟条件应尽可能与生理状况相匹配。迄今为止，很少有实验性磨损研究检查关节松弛对磨损和关节运动学的影响，并且在模拟器磨损研究中还没有充分考虑到前十字韧带的缺失。这项研究的目的是研究关于磨损和运动学的不同韧带和软组织模型。虚拟的软组织控制系统用于在力控制的膝盖磨损模拟器中模拟不同的运动约束。考虑到不存在前十字韧带的更现实和复杂的韧带模型的应用导致聚乙烯磨损（p = 0.02）和关节运动学（p <0.01）显着增加。我们建议使用更复杂的韧带模型来适当模拟人膝关节的功能并评估全膝关节置换的磨损行为。提出了可行的仿真模型。

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