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首页> 外文期刊>Journal of orthopaedic research >Hamstrings and iliotibial band forces affect knee kinematics and contact pattern.
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Hamstrings and iliotibial band forces affect knee kinematics and contact pattern.

机译：绳肌和ili胫束带的力量会影响膝盖的运动学和接触方式。

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Many clinical studies have emphasized the role of the hamstrings and the iliotibial band on knee mechanics, although few biomechanical studies have investigated it. This study therefore examined two hypotheses: (a) with loading of the hamstrings, the tibia translates posteriorly and rotates externally and the tibial contact pattern shifts anteriorly; furthermore, the changes in tibial kinematics alter patellar kinematics and contact; and (b) loading the iliotibial band alters the kinematics and contact pattern of the tibiofemoral joint similarly to loading the hamstrings, and loading the iliotibial band laterally translates the patella and its contact location. Five cadaveric knee specimens were tested with a specially designed knee-joint testing machine in an open-chain configuration. At various flexion angles, the knees were tested always with a quadriceps force but with and without a hamstrings force and with and without an iliotibial band force. The results support the first hypothesis. Hence, the hamstrings may be important anterior and rotational stabilizers of the tibia, a role similar to that of the anterior cruciate ligament. The results also support the second hypothesis, although the iliotibial band force had a smaller effect on the tibia than did the hamstrings force. Both forces also changed patellar kinematics and contact, demonstrating that these structures should also be considered during the clinical management of patellar disorders.
机译：许多临床研究都强调studies绳肌和the胫束带对膝关节力学的作用，尽管很少有生物力学研究对此进行过研究。因此，这项研究检查了两个假设：（a）腿筋负荷时，胫骨向后平移并向外旋转，而胫骨接触模式向前移动;此外，胫骨运动学的改变改变了pa骨运动学和接触。 （b）加载ili胫束带会改变胫股关节的运动学和接触方式，类似于加载绳肌，并且加载胫束带会横向平移the骨及其接触位置。使用专门设计的膝关节测试机以开放链配置测试了五个尸体膝盖样本。在各种屈曲角度下，始终用股四头肌力量测试膝关节，但不包括and绳肌力，也可以不考虑胫束带力。结果支持第一个假设。因此，绳肌可能是胫骨的重要前稳定器和旋转稳定器，其作用类似于前交叉韧带。结果也支持第二种假设，尽管胫束带对胫骨的影响小于绳肌的作用。两种力量都改变了pa骨的运动学和接触，表明在clinical骨疾病的临床治疗中也应考虑这些结构。

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