Cappagh National Orthopaedic Hospital, Dublin, Ireland.
Arthroscopy. 2011 Mar;27(3):365-71. doi: 10.1016/j.arthro.2010.07.025. Epub 2010 Nov 2.
The purpose of this study was to investigate the effect of the meniscofemoral ligaments on lateral meniscal motion during flexion and extension of the human knee joint.
A cadaveric biomechanical study was performed. The effect of meniscofemoral ligament tension on the dynamics of the posterior horn of the lateral meniscus was determined by image analysis.
We found that the meniscofemoral ligaments functioned in a reciprocal manner, with the anterior meniscofemoral ligament developing tension with flexion and the posterior meniscofemoral ligament tensioning with extension. Analysis of posterior horn motion showed that the meniscofemoral ligaments caused a medial, superior, and anterior displacement of the posterior horn throughout knee motion, thus increasing the congruity of the posterior meniscal arch and the lateral femoral condyle. There was a significant correlation between meniscofemoral ligament tension and displacement of the posterior meniscal horn (r = 0.76, P < .0001).
Where both meniscofemoral ligaments were present, the posterior horn of the lateral meniscus was subject to a displacing force throughout the range of knee motion tested. The degree of displacement correlated with the magnitude of ligament tension, and its direction was anteromedial and superior.
The findings of this study provide further information on the role of the meniscofemoral ligaments at the human knee joint and may influence decisions regarding the management of ligamentous or lateral meniscal injury.
本研究旨在探讨膝关节屈伸过程中半月板股骨韧带对外侧半月板运动的影响。
进行了一项尸体生物力学研究。通过图像分析确定半月板股骨韧带张力对外侧半月板后角动力学的影响。
我们发现半月板股骨韧带以相互的方式发挥作用，前半月板股骨韧带在弯曲时产生张力，后半月板股骨韧带在伸展时产生张力。后角运动分析表明，半月板股骨韧带使后角在整个膝关节运动过程中发生内侧、上方和前向移位，从而增加了后半月板弓和外侧股骨髁的一致性。半月板股骨韧带张力与后半月板角位移之间存在显著相关性（r = 0.76，P <.0001）。
在存在两条半月板股骨韧带的情况下，外侧半月板的后角在测试的膝关节运动范围内受到移位力的作用。位移程度与韧带张力的大小相关，其方向为前内侧和上方。
本研究的结果提供了关于人膝关节半月板股骨韧带作用的进一步信息，可能影响对韧带或外侧半月板损伤的管理决策。
