4 Bar Linkage Knee Joint for Knee Disarticulation-4P21(S.S)-4P30(T.T)

The Modular Polycentric Knee Joints with extension assist 4P30 (titanium) and 4P21(stainless steel) are to be exclusively used for the prosthetic fitting of amputations of the lower limb.The joints are recommended for knee disarticulation amputees up to 100 kg/220 lbs (4P30) or 110 kg/242 lbs (4P21) body weight and with moderate activity levels. product offered by Beijing Prosthetic & Orthotic Technique Center