Relief area analysis in prosthetic socket

Abstract

Currently, there are more than 500,000 lower limb amputees in the U.S. alone, with 60,000 new ones every year [9]. This statistic makes the use of prosthetic sockets more widespread all over the world. As a result of this increase in number, the complexity of a socket design varies according to each patients condition. The pressure distribution varies at the limb socket according to certain factors. Although socket technology is getting more advanced, the majority of researchers are still facing problems with relief areas. In order to simplify this issue, a study was performed with the aid of the ANOVA Design Expert 8 software that takes into account all factors and variables for both the model and residual, while calculating the maximum displacement and the maximum stress for each. In addition, interviews were performed with patients and the head specialist at a center for prosthetics. The corresponding results of each were compared; ANOVA proved significance at the FH; whereas the interviews conducted were evident that patients endured pain at the PT and FH. Moreover, further studies were performed on the FH, and results revealed that lateral forces play a major role and is influenced by the lifestyle of the patient.