Jurist K A, Otis J C
Am J Sports Med. 1985 Jul-Aug;13(4):254-8. doi: 10.1177/036354658501300407.
Rehabilitation of knee extensors is a major consideration in patients with cruciate injuries and repairs. Extension exercises, however, can produce undesirable loads on the injured or replaced anterior cruciate ligament (ACL) resulting in permanent stretch of this restraint. Our study measures the tibiofemoral displacements associated with proximal, middle, and distal locations of the external resisting force and knee flexion angles of 30 degrees, 60 degrees, and 90 degrees. Our results show that tibiofemoral displacements are dependent on both location of the external resisting force and knee flexion angle, with anterior displacements being associated with distal displacement of the resistance pad. The results suggest that patients with ACL injuries or repairs conduct extension exercises with a proximal position of the resistance pad to minimize loads and prevent stretching of this constraint.
对于患有十字韧带损伤和修复的患者，膝关节伸肌的康复是一个主要考虑因素。然而，伸展运动可能会对受伤或置换的前交叉韧带（ACL）产生不良负荷，导致该约束结构永久性拉伸。我们的研究测量了与外部阻力的近端、中部和远端位置以及30度、60度和90度膝关节屈曲角度相关的胫股位移。我们的结果表明，胫股位移取决于外部阻力的位置和膝关节屈曲角度，前向位移与阻力垫的远端位移相关。结果表明，ACL损伤或修复的患者应在阻力垫近端位置进行伸展运动，以尽量减少负荷并防止该约束结构拉伸。
