Profile: Shijiazhuang Perfect Prosthetic Manufacture Co.,Ltd. specializes in providing prosthetic lower, and orthotic parts. Prosthetic knee joint is to help the amputee to simulate the bending and extension of the knee joint when moving. At the same time, when the prosthetic foot is used in conjunction, the knee plays a role to achieve a smooth and relaxed gait. The feature of Mechanical Knees is to help provide standing bending, reduce the pressure on the back and buttocks through the knee joints, and make the gait cycle smoother.