A propensity-score matching comparison of unicompartmental knee arthroplasty and total knee arthroplasty for medial compartment osteoarthritis of the knee
[Objective]To compare the short-term clinical outcomes of unicompartmental knee arthroplasty(UKA)versus total knee ar-throplasty(TKA)for medial compartment osteoarthritis of the knee.[Methods]A retrospective analysis was performed on 457 patients who received arthroplasty for medial compartment osteoarthritis of the knee in our hospital from January 2021 to August 2023.By propensity-score matching(PSM)method,88 patients underwent UKA and 88 received TKA were finally included in this study.The document regard-ing perioperative period,follow-up and auxiliary examinations were compared between the two groups.[Results]The UKA group proved sig-nificantly superior to the TKA group in terms of operation time[(74.6±8.1)min vs(85.4±8.7)min,P＜0.001],incision length[(7.1±0.9)cm vs(14.4+2.6)cm,P＜0.001],intraoperative blood loss[(174.6±33.5)ml vs(305.7±68.9)ml,P＜0.00l],postoperative drainage[(22.7±3.6)ml vs(43.5±6.7)ml,P＜0.001],ambulation time[(2.7±0.5)hours vs(4.7±1.1)hours,P＜0.001],as well as incision healing grade,hospital stay and treatment cost.In addition,the patients in UKA group resumed full weight-bearing activities significantly earlier than those in TKA group(P＜0.05).The VAS,HSS,WOMAC scores and ROM significantly improved in both groups over time(P＜0.05).The UKA was signifi-cantly better than the TKA group regarding to VAS,HSS,WOMAC score and ROM 1 month postoperatively and at the last follow-up(P＜0.05).However,there was no significant difference in the incidence of later complications between the two groups(P＞0.05).As for auxiliary examination,the UKA group was also significantly better than the TKA group in terms of the levels of TNF-α and TGF-β1 in synovial fluid 1 month after surgery(P＜0.05).At the last follow-up,the UKA group got significantly better femorotibial angle(FTA),medial proximal tibial angle(MPTA),posterior tibial slope(PTS)and mechanical axis deviation(MAD)on images than the TKA group(P＜0.05).[Conclusion]For medial compartment osteoarthritis of the knee,UKA is less invasive and has better short-term clinical outcomes than TKA.
NETL
NSTL
万方数据
