Department of Trauma Orthopedics, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, PR China.
J Arthroplasty. 2011 Sep;26(6):847-54. doi: 10.1016/j.arth.2010.09.008. Epub 2010 Nov 12.
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.
在全膝关节置换术后，高屈曲度假体是否优于传统假体仍存在争议。因此，进行了这项荟萃分析，以评估这两种不同设计的效果。经过全面检索，有 11 项试验共 1204 个膝关节符合数据提取和汇总分析的条件。结果表明，高屈曲度后稳定型与标准后稳定型 TKA 的关节活动度无差异（加权平均改善度为 0.93°；95%置信区间为-0.75°至 2.60°；P=.28），高屈曲度保留交叉韧带与保留交叉韧带 TKA 的关节活动度也无差异（2.06°；0.06°至 4.17°；P=.06），负重屈曲度（2.05°；0.99°至 5.08°；P=.19），膝关节协会评分（1.59 分；0.42 至 3.60 分；P=.12）和特殊外科医院评分（0.84 分；0.37 至 2.04 分；P=.17），至少随访 1 年。未发现感染、松动和骨溶解。目前的证据不能证实高屈曲度假体优于传统假体。
