Visuri T, Lindholm T S, Antti-Poika I, Koskenvuo M
Orthopaedic Hospital of the Invalid Foundation, Helsinki, Finland.
Ital J Orthop Traumatol. 1993;19(1):107-11.
A study was done on the role of postoperative leg length inequality (LLI) in aseptic loosening after total hip arthroplasty (THA). Data on 405 McKee-Farrar hip replacements performed at the Invalid Foundation, Helsinki, Finland were available for the study. The mean lengthening of the operated leg was 0.8 cm after an average follow-up of 7.7 years. Of these hips, 63 (15.6%) subsequently underwent revision due to aseptic loosening of the prosthesis. Several risk factors were analysed using multivariate stepwise regression analysis to find factors which predispose patients to loosening: overlength of the operated limb proved to be the most important. Our conclusion is that overlengthening should be avoided by careful preoperative and intraoperative length measurements and proper selection of prostheses. If there is marked overlengthening of the replaced hip postoperatively, it should be corrected.
一项关于全髋关节置换术（THA）后下肢长度不等（LLI）在无菌性松动中作用的研究。芬兰赫尔辛基残疾基金会进行的405例麦基 - 法拉尔髋关节置换手术的数据可用于该研究。平均随访7.7年后，手术侧下肢平均延长0.8厘米。在这些髋关节中，63例（15.6%）随后因假体无菌性松动而进行了翻修。使用多变量逐步回归分析对几个危险因素进行分析，以找出使患者易发生松动的因素：手术肢体过长被证明是最重要的因素。我们的结论是，应通过术前和术中仔细测量长度以及正确选择假体来避免过长。如果术后置换髋关节明显过长，应予以纠正。
