Herzog Walter, Read Lynda
J Appl Biomech. 1993 Nov;9(4):260-278. doi: 10.1123/jab.9.4.260.
The purpose of this study was to estimate cruciate ligament forces in Alpine skiing during a movement that has been associated with anterior cruciate ligament (ACL) tears. Resultant knee joint forces and moments were obtained from two skiers during a World Cup Downhill race using an inverse dynamics approach and a 2-D bilaterally symmetric system model. It was found that ACL forces were typically small for both skiers throughout the movement analyzed because quadriceps forces prevented anterior displacement of the tibia relative to the femur at the knee joint angles observed. However, for about 10 ms, loading conditions in the knee joint of Subject 2 (who displayed poor form) were such that large ACL forces may have been present. These particular loading conditions were never observed in Subject 1, who displayed good form. Since neither of the skiers was injured, it is not possible to draw firm conclusions about isolated ACL tears in Alpine skiing from the data at hand.
本研究的目的是估计在与前交叉韧带（ACL）撕裂相关的一项动作中高山滑雪时的交叉韧带力。在一场世界杯速降比赛中，使用逆动力学方法和二维双侧对称系统模型，从两名滑雪者身上获取了膝关节合力和力矩。结果发现，在整个分析的动作过程中，两名滑雪者的ACL力通常都很小，因为在观察到的膝关节角度下，股四头肌的力量阻止了胫骨相对于股骨向前移位。然而，在大约10毫秒的时间里，受试者2（姿势不佳）膝关节的负荷情况表明可能存在较大的ACL力。在姿势良好的受试者1身上从未观察到这些特定的负荷情况。由于两名滑雪者均未受伤，因此无法根据手头的数据就高山滑雪中孤立的ACL撕裂得出确凿结论。
