Parratte S, Argenson J-N A, Pearce O, Pauly V, Auquier P, Aubaniac J-M
Aix-Marseille University, Marseille, France.
J Bone Joint Surg Br. 2009 Mar;91(3):351-6. doi: 10.1302/0301-620X.91B3.21588.
We retrospectively reviewed 35 cemented unicompartmental knee replacements performed for medial unicompartmental osteoarthritis of the knee in 31 patients </=50 years old (mean 46, 31 to 49). Patients were assessed clinically and radiologically using the Knee Society scores at a mean follow-up of 9.7 years (5 to 16) and survival at 12 years was calculated. The mean Knee Society Function Score improved from 54 points (25 to 64) pre-operatively to 89 (80 to 100) post-operatively (p < 0.0001). Six knees required revision, four for polyethylene wear treated with an isolated exchange of the tibial insert, one for aseptic loosening and one for progression of osteoarthritis. The 12-year survival according to Kaplan-Meier was 80.6% with revision for any reason as the endpoint. Despite encouraging clinical results, polyethylene wear remains a major concern affecting the survival of unicompartmental knee replacement in patients younger than 50.
我们回顾性分析了31例年龄≤50岁（平均46岁，31至49岁）因膝关节内侧单髁骨关节炎接受骨水泥型单髁膝关节置换术的35例患者。采用膝关节协会评分对患者进行临床和影像学评估，平均随访9.7年（5至16年），并计算12年生存率。膝关节协会功能评分平均值从术前的54分（25至64分）提高到术后的89分（80至100分）（p<0.0001）。6例膝关节需要翻修，4例因聚乙烯磨损接受单纯胫骨衬垫置换治疗，1例因无菌性松动，1例因骨关节炎进展。以任何原因翻修为终点，根据Kaplan-Meier法计算的12年生存率为80.6%。尽管临床结果令人鼓舞，但聚乙烯磨损仍是影响50岁以下患者单髁膝关节置换术生存率的主要问题。
