Clinical Results Of Unicompartmental Knee Arthroplasty And Specific Assessment Score

Objective To summarize the middle-term results of unicompartmental knee arthroplasty (UKA)and postulate a new specific assessment score .Methods From March 2004 to September 2006, unicompartmental knee arthroplasty had been performed in 22 patients (22 knees)with unicompartmental osteoarthritis.The mean follow-up period was 34 months(range from 14 to 49 months).The HSS score,KSS score and WOMAC score were used to evaluate the outcomes of UKA at the time of preoperation and follow-up respectively.A new unicompartmental knee arthroplasty specific score was postulated to evaluate the results of UKA . Results At the time of the final follow-up,pain relief was significant in all patients , and the range of motion and quality of living were improved as well . The HSS score,KSS score and WOMAC score significantly improved comparing with pre-operation( P<0.01). The mean specific UKA score was 87.2, 15 knees rated as excellent and 7 knees rated as good ,without fair or poor so far .The outcome of UKA score was closely correlated with that of the the HSS score,KSS score and WOMAC score(r:0.892,0.921,0.914,-0.827 ). Conclusion Unicompartmental knee arthroplasty is an effective procedure for unicompartmental knee osteoarthritis,the middle-term result of UKA is satisfactory.The Unicompartmental knee arthroplasty specific score can be used to evaluate the curative effect of UKA comprehensively.