Ostgaard S E, Helmig P, Nielsen S, Hvid I
University of Arhus, Biomechanics Laboratory, Orthopedic Hospital, Denmark.
Acta Orthop Scand. 1991 Feb;62(1):4-8. doi: 10.3109/17453679108993082.
Knee instability was evaluated in 13 normal osteoligamentous knee preparations after transection of the anterior cruciate ligament. Abduction-adduction rotation, coupled tibial translatory movement, and coupled tibial axial rotation were recorded continuously and simultaneously during flexion or extension while applying a well defined valgus directed moment and during extension while applying an anterior tibial force. As a result of the valgus-directed moment, an increase was found in abduction rotation, in coupled anterior tibial translation, and in coupled internal tibial axial rotation. Coupled rotatory and translatory instabilities were larger, and maximum instability was observed at a smaller knee angle during the extension movement than during the flexion movement. The pattern of the instability, excited as a result of the valgus moment, was different from the instability excited as a result of an anterior tibial force.
在13个正常的骨韧带膝关节标本中，在切断前交叉韧带后评估膝关节不稳情况。在屈伸过程中，同时施加明确的外翻力矩时，以及在伸展过程中施加胫骨前向力时，连续同步记录外展 - 内收旋转、伴随的胫骨平移运动和伴随的胫骨轴向旋转。由于外翻力矩，发现外展旋转、伴随的胫骨前向平移和伴随的胫骨内旋增加。伸展运动过程中伴随的旋转和平移不稳更大，并且与屈曲运动相比，在较小的膝关节角度观察到最大不稳。由外翻力矩激发的不稳模式与由胫骨前向力激发的不稳不同。
