An Investigation into a Spring Based Ankle Joint Designed for Lower Limb Prosthesis_Crimson Publishers
An Investigation into a Spring Based Ankle
Joint Designed for Lower Limb Prosthesis by Sayem Hossain Bhuiyan* in
Evolutions in Mechanical Engineering_ Ankle
Joint
Abstract
A spring based Ankle
Joint is designed to improve the performance of mechanical type prostheses.
The torsional and compression springs with the help of some foot plate
arrangement is used to enable the prosthesis in producing desired flexion and
extension and also storing and returning energy by the ankle joint during the
gait cycle. The motion analysis and Finite-Element Analysis (FEA) of ankle
joint components are carried out to assess the feasibility of the design. The
FEA results are then compared with the real data obtained from the literature
for a similar subject. The pattern of motion analysis results has shown a great
resemblance with the gait cycle of a healthy biological limb, and the design is
identified to be safe with factory of safety of 1.9 from the FEA results.
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