Single-stage bilateral medial Oxford Unicompartmental Knee Arthroplasty: A case-control study of perioperative blood loss, complications and functional results.

Background: The benefits and risks of a single-stage medial UKA remains a subject of debate because of the theoretically higher risk of complications and specifically blood loss. The aim of this study was to evaluate the perioperative blood loss, risks and the functional results of single-stage bilateral medial Oxford Unicompartmental Knee Arthroplasty (OUKA) compared to a standard unilateral medial OUKA procedure (control group).

Hypothesis: The blood loss observed during bilateral single-stage medial Oxford UKA is not different from that of the control group.