Lehmann J F, Ko M J, deLateur B J
Arch Phys Med Rehabil. 1980 Nov;61(11):536-41.
This study was undertaken to evaluate how effectively an ankle-foot orthosis can substitute for paralyzed musculature, and to determine the forces it sustains in so doing. Timing of the events of gait, the ground reaction forces, their magnitude and location, and the brace moments were studied. Midstance phase was found lengthened at the expense of push-off phase. During push-off, vertical loading and posterior shear were markedly reduced by tibial block. Also, the dorsiflexion moment in the orthosis was correspondingly increased. The orthosis was found to substitute for muscle function in that it approximates the foot-ankle motion of heel-strike and allows a push-off substitute.
本研究旨在评估踝足矫形器替代瘫痪肌肉组织的效果，并确定其在替代过程中所承受的力。研究了步态事件的时间、地面反作用力、其大小和位置以及支具力矩。发现支撑中期延长，以牺牲蹬离期为代价。在蹬离过程中，胫骨阻滞显著降低了垂直负荷和后向剪切力。此外，矫形器中的背屈力矩相应增加。发现该矫形器可替代肌肉功能，因为它近似足跟撞击时的足踝运动，并允许替代蹬离动作。
