A Comprehensive Understanding of Amputee Biomechanics

Available prosthetic legs are built using dynamic models based able-bodied biomechanics. Thus, they cannot take into account the specific gait adaptations used by individuals with amputations. As a result, the function of the available prosthetic legs is suboptimal. To address this limitation, we aim to collect a comprehensive biomechanics dataset by recording how prosthesis users walk across wide ranges of speed and cadence while using different prosthetic technologies. This dataset will encompass 10 full-community ambulators and 10 limited-community ambulators as they walk at 5 different speeds. The dataset will be made fully available to the scientific community.  For this project, we are collaborating with Prof. Foreman, PT, Ph.D. in the Department of Physical Therapy & Athletic Training.


Powered Ankle and Knee Contribution to Mobility

Safe and stable ambulation requires net-positive energy injection at the joint level. In able-bodied individuals, most of this energy is provided by the ankle joint. Thus, powered ankle prostheses are designed to inject energy during walking. Unfortunately, the ability to inject positive energy comes at the cost of increase prosthesis weight, which has negative consequences on gait. To address this issue, we are exploring an alternative solution which consists of injecting energy during walking with a powered knee prosthesis. Pilot studies show that this approach leads to metabolic cost reduction in walking.

Under Construction !!!

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