Andriacchi T P
Department of Orthopedic Surgery, Rush-Presbyterian-St. Luke's Medical Center, Chicago, Illinois.
Orthop Clin North Am. 1994 Jul;25(3):395-403.
The dynamics of malalignment are based on the combination of the static limb alignment and the dynamics of loading at the knee during walking and other activities of daily living. Dynamic loading at the knee can be influenced by subconscious control of limb position such as foot placement, active muscle contraction, passive soft-tissue stability, as well as the speed of walking. The loads that are generated during these dynamic activities are substantially greater than the loads that can be generated during static postures. Therefore, limb alignment based on static radiographic measurements provides one component to the complete analysis of the factors influencing loading at the knee joint. Loading at the knee joint is an important consideration in the progression of degenerative processes at the knee, as well as in the planning and selection of certain treatment modalities. Dynamic malalignment that occurs during activities such as gait should be considered in evaluating the progression of disease processes as well as the selection of appropriate treatment modalities.
力线不正的动态变化基于静态肢体力线与步行及其他日常生活活动中膝关节负荷动态变化的综合情况。膝关节的动态负荷会受到诸如足部放置等肢体位置的潜意识控制、主动肌肉收缩、被动软组织稳定性以及步行速度的影响。这些动态活动中产生的负荷远大于静态姿势下产生的负荷。因此，基于静态X线测量的肢体力线为全面分析影响膝关节负荷的因素提供了一个组成部分。膝关节负荷是膝关节退变过程进展以及某些治疗方式规划和选择时的重要考量因素。在评估疾病进程进展以及选择合适的治疗方式时，应考虑诸如步态等活动中出现的动态力线不正情况。
