The Oxford unicompartmental knee prosthesis: midterm follow-up

Background Unicompartmental knee arthroplasty is a relatively conservative form of replacement arthroplasty in that it preserves all the important stabilizing structures of the knee instead of discarding them. Our long-term results obtained with the Oxford unicompartmental knee prosthesis (OUKP) for medial unicompartmental knee osteoarthrosis are presented. Methods Forty-five prostheses in 43 patients were evaluated using the Hospital for Special Surgery (HSS) knee score after 10 years (mean follow-up, 8 years 9 months). Three patients were lost to follow-up because of death. Results The mean HSS score was 177.6 (80% excellent, 10% good, 5% fair, 5% poor). Conclusions These findings confirm the good results reported in other studies, regarding proper patient selection and a consistent operative technique.