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Contribution of ankle-foot orthosis moment in regulating ankle and knee motions during gait in individuals post-stroke
| Content Provider | Scilit |
|---|---|
| Author | Kobayashi, Toshiki Orendurff, Michael S. Singer, Madeline L. Gao, Fan Foreman, K. Bo |
| Copyright Year | 2017 |
| Description | Journal: Clinical Biomechanics Background 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. Methods 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. Findings 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). Interpretations 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. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5494285/pdf http://www.clinbiomech.com/article/S0268003317300839/pdf |
| ISSN | 02680033 |
| e-ISSN | 18791271 |
| DOI | 10.1016/j.clinbiomech.2017.04.002 |
| Journal | Clinical Biomechanics |
| Volume Number | 45 |
| Language | English |
| Publisher | Elsevier BV |
| Publisher Date | 2017-04-08 |
| Access Restriction | Open |
| Subject Keyword | Journal: Clinical Biomechanics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Biophysics Sports Science |
