Biomedical Design of Powered Ankle- Foot Prosthesis – A Review

Abstract Despite the fact that the potential advantages of a powered ankle-foot prosthesis have been all around reported, nobody has effectively created and confirmed that such a prosthesis can enhance amputee step contrasted with an ordinary passive elastic prosthesis. One of the primary obstacles that prevent such a advancement is the test of building a lower leg foot prosthesis that matches the size and weight of the in place lower leg, yet gives an adequately huge quick power yield and torque to impel an amputee. In this paper, we exhibit a novel, controlled lower leg foot prosthesis that defeats these outline challenges. The prosthesis includes a unidirectional spring, designed in parallel with a force controllable actuator with arrangement flexibility. With this engineering, the ankle-foot prosthesis coordinates the size and weight of the human ankle, and is appeared to fulfill the prohibitive outline determinations managed by typical human ankle strolling biomechanics.