Hullin M G, Robb J E, Loudon I R
Princess Margaret Rose Orthopaedic Hospital, Edinburg, Scotland.
J Pediatr Orthop. 1992 Jul-Aug;12(4):518-21.
Six children with low-level myelomeningocele underwent gait analysis. All showed excessive ankle dorsiflexion and knee flexion when walking barefoot. A rigid thermoplastic ankle-foot orthosis (AFO) improved gait by preventing ankle dorsiflexion and reducing knee flexion. Biomechanically, the AFO caused a reduction in external knee moment by aligning the knee with the ground reaction force. Small changes in the foot-shank angle of the orthosis had profound effects on knee mechanics. Knee hyperextension could be controlled by a rocker sole. Kinetic gait analysis permits understanding of the biomechanical effects of orthoses.
六名患有低位脊髓脊膜膨出的儿童接受了步态分析。所有儿童在赤脚行走时均表现出过度的踝关节背屈和膝关节屈曲。一种刚性热塑性踝足矫形器（AFO）通过防止踝关节背屈和减少膝关节屈曲改善了步态。从生物力学角度来看，AFO通过使膝关节与地面反作用力对齐，减少了膝关节的外部力矩。矫形器的小腿与足部角度的微小变化对膝关节力学产生了深远影响。摇椅式鞋底可控制膝关节过伸。动态步态分析有助于理解矫形器的生物力学效应。
