Contribution of ankle-foot orthosis moment in regulating ankle and knee motions during gait in individuals post-stroke.
Contribution of ankle-foot orthosis moment in regulating ankle and knee motions during gait in individuals post-stroke.
复制标题
DOI：
10.1016/j.clinbiomech.2017.04.002
复制
发表时间：
2017-06
期刊：
影响因子：
--
通讯作者：
Foreman KB
中科院分区：
文献类型：
--
作者：
Kobayashi T;Orendurff MS;Singer ML;Gao F;Foreman KB
Ankle-foot orthosis moment resisting plantarflexion has systematic effects on ankle and knee joint motion in individuals post-stroke. However, it is not known how much ankle-foot orthosis moment is generated to regulate their motion. The aim of this study was to quantify the contribution of an articulated ankle-foot orthosis moment to regulate ankle and knee joint motion during gait in individuals post-stroke. Gait data were collected from 10 individuals post-stroke using a Bertec split-belt instrumented treadmill and a Vicon 3-dimensional motion analysis system. Each participant wore an articulated ankle-foot orthosis whose moment resisting plantarflexion was adjustable at four levels. Ankle-foot orthosis moment while walking was calculated under the four levels based on angle-moment relationship of the ankle-foot orthosis around the ankle joint measured by bench testing. The ankle-foot orthosis moment and the joint angular position (ankle and knee) relationship in a gait cycle was plotted to quantify the ankle-foot orthosis moment needed to regulate the joint motion. Ankle and knee joint motion were regulated according to the amount of ankle-foot orthosis moment during gait. The ankle-foot orthosis maintained the ankle angular position in dorsiflexion and knee angular position in flexion throughout a gait cycle when it generated moment from −0.029 (0.011) to −0.062 (0.019) Nm/kg (moment resisting plantarflexion was defined as negative). Quantifying the contribution of ankle-foot orthosis moment needed to regulate lower limb joints within a specific range of motion could provide valuable criteria to design an ankle-foot orthosis for individuals post-stroke.
