On the development of a powered prosthesis for transtibial amputees

This paper reports on the development of a powered transtibial prosthesis. The initial prosthesis prototype is a pneumatically powered system, which serves as test bed for proof-of-concept and evaluating control algorithms in laboratory conditions. The characteristics and working principle of the actuators are described. The control approach is discussed. First experimental results with an amputee are presented that demonstrate the promising performance properties of the powered prosthesis.