Crowninshield R D, Johnston R C, Brand R A, Pedersen D R
Clin Orthop Relat Res. 1983 Dec(181):291-7.
A mathematic model of the hip capsule and lower extremity musculature was utilized to predict the forces present in the hip ligaments during locomotion. The results demonstrate principles and trends (rather than absolute results) in hip mechanics, the details of which are affected by the associated modeling assumptions. The active stretching of a hip joint capsule tightened by scarring or surgical transfer may appreciably increase the hip contact force. Capsular elements that prevent hip flexion and adduction play a major role in hip contact force exaggeration during common activities. The positive effect of maintaining the hip capsule to reduce total hip component dislocation contrasts with the potential negative effects of restricting joint motion and increasing the joint contact force. Increased joint loading due to capsular restriction may contribute to prosthetic component loosening.
利用髋关节囊和下肢肌肉组织的数学模型来预测运动过程中髋关节韧带中的受力情况。结果展示了髋关节力学中的原理和趋势（而非绝对结果），其细节受相关建模假设的影响。因瘢痕形成或手术移位而收紧的髋关节囊的主动拉伸可能会显著增加髋关节接触力。在日常活动中，防止髋关节屈曲和内收的囊状结构在髋关节接触力增大方面起主要作用。维持髋关节囊以减少全髋关节组件脱位的积极效果与限制关节活动和增加关节接触力的潜在消极效果形成对比。由于囊状结构限制导致的关节负荷增加可能会导致假体组件松动。
