The purpose of this study was to quantify individual muscle forces for different levels of amputation, during swing phase of the above the knee amputees. The lower extremity was modeled as a two-degree of freedom linkage that its joints were located at hip and knee. Only the movement in the sagittal plane was considered to be important, and each muscle was modeled as an ideal force generator. The kinematic data were collected using a motion analysis system. Calculated muscle forces correspond to the electromyography activity of muscles. Results show that the forces of residual hip extensor forces become higher when other extensors are removed, and residual hip flexor forces become higher when other hip flexors are removed. This result is in line with common practice in amputation surgery according to which the surgeon should maintain the length of residual limb as much as possible.
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- Simulation of the Effect of Amputation Level on Individual Muscle Forces of Transfemoal Amputees
M. R. Eslami
- Springer Berlin Heidelberg