Abstract
Objective: The correct shaping of the socket for appropriate load distribution is a critical process in the design of lower limb prosthesis sockets.Several studies have been conducted to disclose these parameters; they can be divided into two methods: Experiment method and computationmethod. The finite element (FE) analysis has highly effective for study the interface pressure between the residual limb and socket. However, there isa little study focus on creating separate models of the socket and residual limb. Almost research using the same shape of socket and residual limb orusing the unreal model of the socket. This study will be given some solutions for the above issues.Methods: The author creates two models of the residual limb: Same and different with the shape of the socket. After that, the FE models weregenerated with appropriate conditions of the donning process. The experimental procedure was conducted for comparison and discussion with theresults of the simulation.Results: The results in case of different shape of socket and residual limb suggest that it is the better model for evaluating the interface pressure.Conclusions: The procedure developed through this work can be used by future researchers and prosthesis designers in understanding how to betterdesign the socket and transfemoral prostheses.
Highlights
An amputated limb is one of the most physically and psychologically devastating events that can happen to a person
The results in case of different shape of socket and residual limb suggest that it is the better model for evaluating the interface pressure
The procedure developed through this work can be used by future researchers and prosthesis designers in understanding how to better design the socket and transfemoral prostheses
Summary
An amputated limb is one of the most physically and psychologically devastating events that can happen to a person. A transfemoral prosthesis is used as an artificial limb to restore the amputee’s mobility functions for their daily life activities. It aims to effectively integrate the prosthesis as a functional extension of the body. The uppermost part of the prosthesis is called the prosthesis socket, which surrounds the residual limb and acts as a medium to transfer the load from the residual limb to the prosthesis [2]. This goal is limited by the compliance of soft tissue of the residual limb and its local tolerance to externally applied forces. The correct shaping of the socket for appropriate load distribution is a critical process in the design of lower limb prosthesis sockets
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