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首页> 外文期刊>Journal of prosthetics and orthotics: JPO >Reduction in Anterior Cruciate Ligament Load and Tibiofemoral Rotation under Applied Axial Rotation: A Surrogate Model Study of the Efficacy of a New Knee Derotation Brace Concept
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Reduction in Anterior Cruciate Ligament Load and Tibiofemoral Rotation under Applied Axial Rotation: A Surrogate Model Study of the Efficacy of a New Knee Derotation Brace Concept

机译：在应用轴向旋转下减少前十字韧带负荷和胫股旋转：新型膝关节旋转支撑概念功效的替代模型研究

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摘要

A new, adjustable, bidirectional derotation brace, developed to limit tibiofemoral rotation under applied torsional loading, was tested under both static and dynamic loading conditions using an instrumented knee surrogate. In braced versus unbraced comparisons (n = 4), the brace significantly reduced surrogate-anterior cruciate ligament (ACL) load by an average of 18% and tibiofemoral rotation by an average of 25% when physiologically relevant levels of applied femoral torque (12-70 N-m) were statically applied to the knee joint in a controlled laboratory setting. In addition, reductions in surrogate-ACL load of 34% and 27% with the brace were recorded for two levels of dynamic impact loading. The effectiveness of this new brace concept in limiting surrogate-ACL load and tibiofemoral rotation under applied axial torsion may be relevant for ACL injury prevention, and has not, to our knowledge, been demonstrated in currently available knee braces.
机译：开发了一种新的可调节双向防扭转支架，该支架可在施加扭转载荷的情况下限制胫股骨的旋转，并使用仪器化的膝关节替代物在静态和动态载荷条件下进行了测试。在支撑与不支撑的比较中（n = 4），当生理相关水平的股骨扭矩水平时，支撑显着降低了替代前交叉韧带（ACL）的负荷平均18％，而胫股旋转平均降低了25％（12- 70 Nm）在受控的实验室环境中静态施加到膝关节。此外，在两个水平的动态冲击载荷下，用支架将替代ACL载荷分别降低了34％和27％。这种新的支架概念在限制施加轴向扭转的情况下限制替代ACL负荷和胫股旋转的有效性可能与ACL损伤的预防有关，据我们所知，目前尚无膝关节支架得到证实。

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