Mıd-term clınıcal and radıologıcal results of oxford phase 3 unıcompartmental knee arthroplastıes

This study involved 72 unicompartmental knee arthroplasties(UKA) (Oxford Phase 3), performed in 54 patients operated between september 2005 and march 2011 and had a minimum of 6 month follow-ups, at Bilim University School of Medicine Department of Orthopedics and Traumatology. Mid-term clinical and radiological results were evaluated.The mean age of 47 (87%) women and 7 (13%) men was 53,4(47-79) years.Unicompartmental knee arthroplasty was performed in 15 left and 21 right knees and 18 bilaterally. The follow up period was 39,8 (8-72) months on the average. The average body mass index of the patients was found to be 27.62(23.53-30.87).Oxford Knee Score was 14,18(5-22) preoperatively and 43.64(38-48) postoperatively.Hospital for Special Surgery Knee Score of the patients was 53.21(38-69) preoperatively and 95.74(86-100) postoperatively. There were 39 excellent and 15 good results.Knee Society Score was 52,76 (41-67) preoperatively, 89,62(81-99) postoperatively. There were 51 excellent and 3 good results. Knee Society functional score was 52,76(41-67) preoperatively and 89,62(81-99) postoperatively.Radiological evaluation was performed using Oxford criteria. The most frequent error -was encountered femoral component at saggital plane (Table 4.1). There was no correlance between radiological and clinical evaluation.The range of motion was(ROM) 120.38 (105-130) preoperatively and 129.02 (115-140) postoperatively.In conclusion, UKA has important advantages such as low morbidity, minimal bone and soft tissue resection, high patient satisfaction and conserving at least the preoperative ROM. However, during the learning curve period of technical details, complications are relatively high. Better clinical results go parallel with increasing experience.