The incidence of physiological radiolucency following Oxford unicompartmental knee replacement and its relationship to outcome.

摘要: Narrow, well-defined radiolucent lines commonly observed at the bone-implant interface of unicompartmental knee replacement tibial components have been referred to as physiological radiolucencies. These should be distinguished from pathological radiolucencies, which are poorly defined, wide and progressive, associated with loosening infection. We studied incidence clinical significance in 161 Oxford unicondylar replacements five years after surgery. All radiographs were aligned fluoroscopic control obtain views parallel tray reveal interface. found that 49 knees (30%) had complete, 52 (32%) partial 60 (37%) no lines. There was relationship between patient factors such gender, body mass index activity, or operative including status anterior cruciate ligament residual varus deformity. Nor any statistical established presence outcome, particularly pain, assessed by Knee score American Society score. conclude common but their aetiology remains unclear. Radiolucent not a source adverse symptoms pain. Therefore, when attempting identify postoperative pain radiolucency ignored.