Gard Steven A, Konz Regina J
Department of Veterans Affairs (VA) Chicago Health Care System, Lakeside Division, Chicago, IL, USA.
J Rehabil Res Dev. 2003 Mar-Apr;40(2):109-24. doi: 10.1682/jrrd.2003.03.0109.
Shock-absorbing pylons (SAPs) are components that increase prosthetic compliance and provide shock absorption during walking, running, and other high-impact activities in persons with leg amputations. This study investigated the effect of SAPs on the gaits of persons who walk with transtibial prostheses. Two gait analyses were performed on 10 subjects walking with and without an Endolite TT (Telescopic-Torsion) Pylon. Comparison of kinematic and kinetic gait parameters indicated that few quantitative changes were found in the way people walked with and without the SAPs. The most consistent change among subjects was a reduction in the magnitude of an isolated-force transient that occurred during the prosthetic loading response phase, an effect that was more evident at higher speeds. Results from a questionnaire that was administered to subjects indicated they generally preferred walking with the SAP for reasons related to comfort. We conclude that SAPs may provide significant benefit for persons with transtibial amputations who are able to routinely walk at speeds above approximately 1.3 m/s.
减震桩（SAPs）是一种组件，可增加假肢的顺应性，并在腿部截肢者行走、跑步和进行其他高冲击力活动时提供减震功能。本研究调查了减震桩对使用经胫骨假肢行走者步态的影响。对10名使用和不使用Endolite TT（伸缩扭转）桩行走的受试者进行了两次步态分析。运动学和动力学步态参数的比较表明，使用和不使用减震桩时，人们行走方式的定量变化很少。受试者中最一致的变化是在假肢加载反应阶段出现的孤立力瞬态幅度减小，这种影响在较高速度下更为明显。对受试者进行的问卷调查结果表明，出于舒适度相关原因，他们通常更喜欢使用减震桩行走。我们得出结论，对于能够以约1.3米/秒以上的速度常规行走的经胫骨截肢者，减震桩可能会带来显著益处。
