Abstract:

The requirements of modern knee prosthesis are to better recover the motor properties of knee joint and reduce the stress and wear between contact surfaces of joint prosthesis. Improved functional performance requires enhanced range of motion, increased motor performance, and creation of kinematic patterns that more closely resemble the normal knee. Considerations to reduce polyethylene wear include increased cross-linking, improved femoral component surface finish, better modular tibial locking mechanisms, and the use of mobile-bearing artificial knee jonit designs that allow increased implant conformity and reduced contact stresses without increasing loads transmitted to the fixation interface.