Contributions of the lower extremity joint on the support moment in normal walking and in unexpected step-down walking
Tóm tắt
ARelative contributions of lower extremity joints on the support moment were investigated in this study Three-dimensional gait analyses were performed in normal walking and in unexpected step-down walking For both gait studies, inverse dynamics were performed to obtain each joint moment of the lower extremity, which was applied to the forward dynamics simulation to determine the contributions on the support moment at different phases of walking The forward dynamic simulation results showed that, in normal walking, the ankle plantar flexois contributed significantly during single-limb-support However, the ankle plantar flexors, knee extensois and hip extensors worked together duimg double-limb-support In unexpected step-down walking, the important contributors on the support of the body during single-limb-support were not only ankle plantar flexors but also knee extensors This study, analyzing the relative contributions of the lower limb joint moments for the body support, would be helpful to understand diffetent unexpected walking conditions and compensatory mechanisms for various pathological gaits
Tài liệu tham khảo
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