“…In contrast to former tibial components made of mainly caused by implantation with poor stability, and malleolar and soft tissue impingement [11]. In polyethylene [3,7,11,14,17] nowadays the tibial components are metal-backed [13,24] and some the studies of Newton [11], Dini and Bassett [21], and Kirkup [30] the non-constrained designs showed designs have attempted to involve cortical bone in the fixation as is done in knee prostheses [8,13,26].…”