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首页> 外文期刊>Gait & posture >A cadaver knee simulator to evaluate the biomechanics of rectus femoris transfer.
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A cadaver knee simulator to evaluate the biomechanics of rectus femoris transfer.

机译：尸体膝盖模拟器，用于评估股直肌转移的生物力学。

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A cadaver knee simulator has been developed to model surgical transfer of the rectus femoris. The simulator allows knee specimens six degrees of freedom and is capable of modeling both the swing and stance phases of human gait. Experiments were conducted using a mechanical hinge analog of the knee to verify that time, flexion angle, and knee extension force measurements recorded when using the simulator were not influenced by its design or operation. A ballistic double pendulum model was used to model the swing phase of gait, and the contributions of hip and ankle torques and hamstrings cocontraction were included when modeling the stance phase of gait. When modeling swing, range of motion and time to peak knee flexion in swing for the hinge knee were similar to those of in vivo test subjects. Measurements of hinge knee extension force when modeling stance under various biomechanical conditions matched those predicted using an analytical model. Future studies using cadaver knee specimens will apply techniques described in this paper to further our understanding of changes in knee biomechanics caused by rectus femoris transfer surgery.
机译：已经开发了尸体膝盖模拟器来模拟股直肌的手术转移。该模拟器使膝盖标本具有六个自由度，并且能够对人体步态的摆动和站立阶段进行建模。使用膝盖的机械铰链类似物进行实验，以验证使用模拟器时记录的时间，屈曲角度和膝盖伸展力测量值不受其设计或操作的影响。使用弹道双摆模型对步态的摆动阶段进行建模，在对步态的姿态阶段进行建模时，还包括了髋部和踝部转矩以及腿筋的共同收缩。在对秋千建模时，铰链膝关节的动作范围和达到最大膝屈曲的时间与体内测试对象相似。在各种生物力学条件下对姿势建模时，铰链膝盖伸展力的测量值与使用分析模型预测的值相匹配。将来使用尸体膝盖标本进行的研究将应用本文所述的技术，以进一步了解由股直肌转移手术引起的膝盖生物力学变化。

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