[Objective]To determine whether posterior stabilized(PS)prosthesis can obtain better clinical efficacy,kinematic function and knee stability than ultracongruent(UC)prosthesis in primary total knee arthroplasty(TKA).[Methods]The databases,including PubMed,EMBASE,Cochrane Library,Wanfang,CNKI,and China Biology Medicine Disc database,were searched for relevant studies on the comparison of PS and UC prosthesis in primary TKA from the establishment of the database to December 2021.Two reviewers indepen-dently screened literature and extracted data.The quality of the studies was evaluated according to the Newcastle-Ottawa Scale(NOS)and the Cochrane risk of bias assessment tool.Review Manager 5.4 was used for a meta-analysis.[Results]A total of 22 studies were included in this meta-analysis,including 11 randomized controlled trials,9 retrospective studies,and 2 prospective studies,with a total of 2 904 knees involved.The results of meta-analysis showed that the UC group were less than PS group the in terms of femoral rollback(WMD=-5.20,95％CI-5.85～-4.54,P＜0.001)and the maximal flexion(WMD=-2.27,95％CI-3.75～-0.79,P=0.003),whereas the UC group was significantly greater than the PS group in term of the tibial sagittal laxity(WMD=5.10,95％CI 3.45～6.76,P＜0.001).There were no significant differences in function score(SMD=-0.08,95％CI-0.30～0.13,P=0.43),pain score(WMD=1.88,95％CI-2.32～6.08,P=0.38),ROM(WMD=-0.82,95％CI-2.38～0.75,P=0.31),flexion contracture(SMD=-0.05,95％CI-0.25～0.14,P=0.59),and peak torque(WMD=0.26,95％CI-2.91～3.43,P=0.87)between the two groups.[Conclusion]In the primary TKA,the PS prosthesis has better kinematics and knee stability,and is still the best choice of posterior cruciate ligament replacement prosthesis.
total knee arthroplastyknee prosthesisultracongruent prosthesisposterior stabilized prosthesismeta-analysis
NETL
NSTL
万方数据
