Guild George N, Labib Sameh A
Insall Scott Kelly Institute for Orthopaedics and Sports Medicine, Lenox Hill Hospital, New York, New York.
Emory Sports Medicine Center, Emory University, Atlanta, Georgia.
J Arthroplasty. 2014 Mar;29(3):530-4. doi: 10.1016/j.arth.2013.07.035. Epub 2013 Nov 21.
High flexion prostheses have been introduced to achieve high flexion and improve clinical outcomes. Controversy exists in the literature regarding outcomes of high flexion vs. standard implants. This multicenter study compares outcomes in patients receiving a high flexion prosthesis vs. standard prosthesis. 278 high flexion and standard knee prostheses were used. Patients were followed for two years and evaluated prospectively. The mean HSS was 87.3 for the standard group and 88.9 for the flexion group. At two-year follow up the standard prosthesis group had mean flexion of 121° and the high flexion group had mean flexion 120°. No knee had aseptic loosening, infection, or osteolysis. At two-year follow up, there were no significant differences in range of motion, clinical outcome, or radiographic evaluation. Pre-operative motion and functional status have greater impact on clinical outcome than implant alone.
高屈曲假体已被引入以实现高屈曲度并改善临床效果。关于高屈曲假体与标准植入物的效果，文献中存在争议。这项多中心研究比较了接受高屈曲假体与标准假体的患者的效果。使用了278个高屈曲和标准膝关节假体。对患者进行了两年的随访并进行前瞻性评估。标准组的平均HSS评分为87.3，屈曲组为88.9。在两年随访时，标准假体组的平均屈曲度为121°，高屈曲组为120°。没有膝关节出现无菌性松动、感染或骨溶解。在两年随访时，活动范围、临床结果或影像学评估方面没有显著差异。术前活动和功能状态对临床结果的影响比单纯植入物更大。
