The New Model of Lower Limb Prosthesis: Lower Limb Prosthesis Design Based on Indonesian Anthropometry

Abstract

. There have been many different types of lower limb prosthesis offered today. in this paper, a new design has been created that aims to make a prosthesis without measuring the dimensions of the amputation patient's legs. The material used in this design is nylon filament and aluminum 6061. In designing the prosthesis, Indonesian anthropometry is used with ages above 12 years with the 95th percentile. The process of design and analysis using Autodesk Inventor software which uses the theory of finite element analysis. In the process, the analysis is carried out static loading test on the prosthesis and assumed the load is centered on the shank section. Static loading carried out on the prosthesis with nylon and aluminum material after testing showed that the maximum von mises value in the shank part is 0.83 MPa and the foot part is 0.76 MPa. The design of prosthesis using nylon filament and aluminum after analysis proved to be quite strong. However, in this design, the pressure testing that occurs in the socket section due to the load given is still unknown. In designing this prosthesis, it is also designed with three different sizes, considering the variation in the shape of the calves of each different amputation patient.