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首页> 外文期刊>Patient Safety in Surgery >Correlation of radiographic variables to guide safe implant positioning during acetabular surgery and hip replacement: a retrospective observational study
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Correlation of radiographic variables to guide safe implant positioning during acetabular surgery and hip replacement: a retrospective observational study

机译：放射学变量的相关性以指导髋臼手术和髋关节置换术期间安全的植入物定位：一项回顾性观察研究

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Knowledge of periacetabular anatomy is crucial for prosthetic cup placement in total hip arthroplasty and for screw placement in anterior fixation with acetabular fractures. It is known that degree of hip dysplasia correlates with medial bone stock and that medial bone stock shows a weak correlation to Lequesne’s acetabular index (AI). Aim of this study was to investigate a possible correlation between AI and the newly proposed medial safe zone. AI and the medial save zone were measured on 419 hips using a computed-tomography scan of the pelvis. AI was assessed on a 2D reconstructed anterior-posterior view of the pelvis using VOXAR?. Correlation was measured using the Pearson correlation coefficient. Mean AI was 4.2 degrees (SD 4.9 degrees). Mean medial safe zone was 8.1?mm (SD 1.9?mm). There was a significant correlation between AI and medial save space with a Pearson correlation coefficient r?=?0.33 (p?=?.001). There is a weak correlation between AI and medial safe zone. AI should not be used to predict medial safe zone. Due to the weakness in correlation AI is not suited for predicting medial safe zone. However, a low or negative AI can be a warning sign for less medial safe zone, prompting surgeons to take care when reaming in THA or placing periacetabular screws.
机译：髋臼周围的解剖学知识对于全髋关节置换术中假体杯的放置以及髋臼骨折前路固定中螺钉的放置至关重要。众所周知，髋关节发育不良的程度与内侧骨股相关，而内侧骨股与Lequesne的髋臼指数（AI）的相关性较弱。这项研究的目的是调查AI与新提议的内侧安全区之间的可能相关性。使用骨盆的计算机断层扫描，在419髋上测量AI和内侧保存区。使用VOXAR？在2D重建的骨盆前后视图上评估AI。使用皮尔逊相关系数测量相关性。平均AI为4.2度（SD 4.9度）。平均内侧安全区为8.1？mm（SD 1.9？mm）。 AI与内侧节省空间之间存在显着的相关性，皮尔逊相关系数r？=？0.33（p？= ?. 001）。 AI与内侧安全区之间的相关性较弱。 AI不应用于预测内侧安全区。由于相关性较弱，AI不适合预测中间安全区。但是，AI较低或为负可能是内侧安全区较弱的警告信号，促使医生在THA内扩孔或放置髋臼周围螺钉时要当心。

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