Acetabular cup positioning in revision total hip arthroplasty with Paprosky type III acetabular defects: Martell radiographic analysis
Acetabular cup positioning in revision total hip arthroplasty with Paprosky type III acetabular defects: Martell radiographic analysis
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DOI：
10.1007/s00264-013-2008-0
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发表时间：
2013-10-01
影响因子：
2.7
通讯作者：
Kwon, Young-Min
中科院分区：
文献类型：
--
作者：
Choi, Ho-Rim;Anderson, David;Kwon, Young-Min
本研究评价了严重髋臼骨缺损的翻修全髋关节置换术（THA）中髋臼杯的位置。（30- 50 A度）和前倾（5- 25 A度），应用数字图像分析软件对34例Paprosky III型髋臼骨缺损患者的髋臼杯位置进行了测量，共发现髋臼杯24个（71%），26个髋臼杯（76%）位于安全区内。19个髋臼杯（56%）在外展和前倾的安全区内。没有脱位，但是有一个髋臼杯超出安全区，导致早期髋臼杯因无菌性松动而失败。在Paprosky III型缺损患者中，有一半病例的髋臼杯定位是“最佳”的。最佳髋臼杯位置的发生率与初次THA中报告的相似，这表明在翻修THA的情况下，大髋臼骨缺损的存在可能不是次佳髋臼杯定位的显著风险因素。
This study evaluates acetabular cup position in the setting of revision total hip arthroplasty (THA) with severe acetabular bone defects.With a definition of safe zone of abduction (30-50A degrees) and anteversion (5-25A degrees), acetabular cup position was measured by a digital image analysis program for 34 patients with Paprosky type III acetabular bone defects.There were 24 cups (71 %) for abduction and 26 cups (76 %) for anteversion located in the safe zone. Nineteen cups (56 %) were within the safe zone for both abduction and anteversion. There was no dislocation, however one cup out of the safe zone resulted in early cup failure due to aseptic loosening.The acetabular cup positioning in patients with Paprosky type III defects was 'optimal' in half of the cases. The prevalence of optimal acetabular cup position was similar to those reported in primary THA, suggesting that the presence of a large acetabular bone defect may not be a significant risk factor for suboptimal acetabular cup positioning in the setting of revision THA.