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Safety Zone for Acetabular Screw Fixation in Cementless Total Hip Arthroplasty. A Study of Pelvic Vascular Anatomy Hironori Ohashi 1 , Shin-ichi Kikuchi 1 , Shigeo Aota 1 , Shin-ichi Konnno 1 1Department of Orthopaedic Surgery, Fukushima Medecal University, School of Medicine Keyword: 骨盤部血管損傷 , pelvic vascular injury , 安全域 , safety zone , セメントレス人工股関節置換術 , cementless total hip arthroplasty pp.1161-1166
Published Date 2008/12/25
DOI https://doi.org/10.11477/mf.1408101410
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 Pelvic vascular injury is one of the serious complications associated with acetabular component setting in cementless total hip arthroplasty (THA). In order to prevent intrapelvic vascular injury during cementless THA, each individual's unique intrapelvic morphology must be fully understood. Therefore, in the present study we investigated the location of intrapelvic blood vessels in order to establish a safety zone for acetabular screw fixation in cementless THA. Few intrapelvic blood vessels were located in the posterior area except in the acetabular center, and when intrapelvic blood vessels were found there, they were typically located 31 mm from the acetabular surface. We therefore concluded that the posterior area, except the acetabular center, is a safe area for screw fixation. Because of the possibility of intrapelvic vascular anomalies and the heterogeneity of pelvic morphology, the possibility of intrapelvic blood vessel injury and the use shorter screws and drills to prevent intrapelvic vascular injury must be borne in mind.


Copyright © 2008, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1286 印刷版ISSN 0557-0433 医学書院

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