<p>A knee joint prosthesis has a femoral component (31) and a tibial component (32). The tibial component (32) has a tibial plateau element (44) fitted in a tibial tray element (40). A hemi capstan shaped bridge member (112) is provided between replicated condyles on the femoral component (31). A specially shaped post is provided between kidney shaped meniscal depressions on the tibial plateau element (44). The bridge member (112) and the post act together to form an additional joint for load transfer during deep flexion of the prosthesis in its operative configuration.</p>
