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首页> 外文期刊>Acta orthopaedica. >Conversion from failed hemiarthroplasty to total hip arthroplasty: A Norwegian Arthroplasty Register analysis of 595 hips with previous femoral neck fractures
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Conversion from failed hemiarthroplasty to total hip arthroplasty: A Norwegian Arthroplasty Register analysis of 595 hips with previous femoral neck fractures

机译：从失败的半人工髋关节置换到全髋关节置换术：挪威关节置换术对595例先前有股骨颈骨折的髋关节的分析

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Background and purpose ?Conversion total hip replacement (THR) is a common procedure after failed hemiarthroplasty, but there have been few reports describing the long-term outcome of this procedure. Patients and methods ?Between 1987 and 2004, 595 THRs were reported to the Norwegian Arthroplasty Register as conversion THR for failed hemiarthroplasty after a femoral neck fracture in patients aged 60 years and older. 122 operations left the femoral stem intact, whereas 473 were converted with exchange of the femoral stem. Results ?We found a lower risk of failure (revision surgery for any reason) for the conversion procedures with stem exchange (RR = 0.4; 95% CI: 0.25–0.81) than for the conversion procedures that retained the femoral stem. For the 473 conversion arthroplasties with exchange of the stem, we found no difference in risk of failure compared to all revision stems in the register, either for the complete prosthesis (RR = 0.8; CI: 0.50– 1.20) or for the stem (RR = 0.9; CI: 0.53–1.59). However, for the 122 conversion procedures in which the femoral stem was retained, we found a significantly increased risk of failure for both the complete prosthesis (RR = 4.6; CI: 2.8–7.6) and for the acetabular cup (RR = 4.8; CI: 2.3–10) compared to primary hip arthroplasties. Interpretation ?Our findings indicate that the seemingly easy operation of implanting an acetabular cup to convert a hemiarthroplasty to a total hip arthroplasty is an uncertain procedure and that the threshold for replacing the stem should be low.
机译：背景与目的？人工全髋关节置换术失败后，通常采用全髋关节置换术（THR），但很少有报道描述这种手术的长期结果。患者和方法1987年至2004年之间，挪威人工关节成形术登记处报告了595例THR，作为60岁及以上患者股骨颈骨折后半髋置换失败的转换THR。进行了122例股骨干手术，而通过置换股骨干进行了473例手术。结果？我们发现，进行股骨干置换的患者（RR = 0.4; 95％CI：0.25-0.81）的手术失败率（由于任何原因而进行翻修手术）比保留股骨干的母猪手术的失败风险更低。对于473个具有置换柄的关节置换术，我们发现与完整假体（RR = 0.8; CI：0.50-1.20）或置换柄（RR）相比，寄存器中所有修订版的置换失败风险没有差异。 = 0.9;置信区间：0.53-1.59）。然而，对于保留股骨干的122种转换手术，我们发现完整假体（RR = 4.6; CI：2.8–7.6）和髋臼杯（RR = 4.8; CI）的失败风险均显着增加。 ：2.3–10）与原发性髋关节置换术相比。解释？我们的研究结果表明，植入髋臼杯将半髋关节置换术转换为全髋关节置换术看似简单，但操作不确定，更换茎的门槛应低。

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