title: High-flexion vs conventional prostheses total knee arthroplasty: a meta-analysis.
abstract: Whether high-flexion prostheses are superior to conventional prostheses after total knee arthroplasty (TKA) remains controversial. Therefore, this meta-analysis was conducted to evaluate the effects of these 2 different designs. After a comprehensive search, 11 trials with 1204 knees were eligible for data extraction and pooled analysis. The results demonstrated that there were no differences in range of motion of high-flexion posterior-stabilized vs standard posterior-stabilized TKA (weighted mean improvement, 0.93°; 95% confidence intervals, -0.75° to 2.60°; P = .28), range of motion of high-flexion cruciate-retaining vs cruciate-retaining TKA (2.06°; 0.06°-4.17°; P = .06), weight-bearing flexion (2.05°; 0.99°-5.08°; P = .19), Knee Society Scores (1.59 points; 0.42-3.60 points; P = .12), and Hospital for Special Surgery Scores (0.84 points; 0.37-2.04 points; P = .17) with at least 1-year follow-up. No infection, loosening, and osteolysis were found. The current evidences cannot confirm that high-flexion prostheses are superior to conventional prostheses.
authors.affiliation: Department of Trauma Orthopedics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, PR China.
authors.forename: Shi-Xing
authors.initials: SX
authors.lastname: Luo
authors.forename: Wei
authors.initials: W
authors.lastname: Su
authors.forename: Jin-Min
authors.initials: JM
authors.lastname: Zhao
authors.forename: Ke
authors.initials: K
authors.lastname: Sha
authors.forename: Qing-Jun
authors.initials: QJ
authors.lastname: Wei
authors.forename: Xiao-Feng
authors.initials: XF
authors.lastname: Li
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000295:instrumentation; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D007720:Knee Prosthesis / Q000009:adverse effects; D008297:Male; D020370:Osteoarthritis, Knee / Q000601:surgery; D011474:Prosthesis Design / Q000009:adverse effects; D016059:Range of Motion, Articular; D016896:Treatment Outcome