4-Bar Friction Knee

This ultra-light miniaturized knee provides the ultimate in function and dependability for the active above knee child amputee, or smaller petite adults. Designed as a 4-bar Polycentric, the knee’s instantaneous center of ration is projected proximal to the patient’s residual limb. The specially engineered alloy construction accommodates the most active child amputee with uncompromising strength and reliability for the ultimate, ultra-light prosthesis. By popular demand, now provided with a light extension assist spring (an extra strong one is also included just in case).