Low polyethylene creep and wear following mobile-bearing unicompartmental knee replacement

ConclusionDuring the first three to six months after implantation, the bearing becomes 0.06  mm thinner due to creep. The combined wear rate of the upper and lower surfaces of the bearing is constant (0.07 mm/year). The wear is lower if the bearing does not overhang the tibia so surgeons should aim for the bearing to be close to the tibial wall. The orientation of the femoral component d oes not influence wear.Level of evidenceRetrospective Study, Level III.
Source: Knee Surgery, Sports Traumatology, Arthroscopy - Category: Orthopaedics Source Type: research