VERILASTTM Technology An advanced bearing system for TKA

Introduction Long-term success of total knee arthroplasty (TKA) is a multifactorial issue. Implant design and materials selection play an important role in the wear-related performance of TKA. It is widely recognized that excessive wear of UHMWPE tibial inserts can result in mechanical implant instability and, in some instances, catastrophic wear. However, the more harmful effect occurs with time in vivo when UHMWPE tibial inserts, which wear at a steady rate, annually release billions of sub-micron particles into the host biological environment. The ultimate effect of this wear is osteolysis and attendant implant loosening, which is a major reason for revision surgery at middle to long-term follow-up.