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Combined Anteversion Technique in Total Hip Arthroplasty for Crowe IV Developmental Dysplasia of the Hip by Biao Zhu; Changzheng Su; Yeteng He; Xingyu Chai; Zhen Li; Zhenyang Hou; Tengteng Lou; Xinfeng Yan is a Medicine article available to read on EtoBox.

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## Background A high rate of postoperative dislocation in total hip arthroplasty (THA) for Crowe IV developmental dysplasia of the hip (DDH) has been reported, 1 of the main reasons being higher true acetabular anteversion. If the cup is fixed with normal anteversion, the anterior rim will be excessively exposed, which reduces the contact areas of the cup and bone, affects prosthesis stability, and leads to iliopsoas tendinitis and persistent hip pain after THA. The aim of this study was to demonstrate that when cup anteversion is larger, adjusting femoral anteversion to bring the combined anteversion (CA) into the “safe zone” might prevent dislocation. ## Methods After having fixed the cup in the acetabulum according to the patients’ native acetabular anteversion, we shortened and rotated the proximal femur to reduce femoral anteversion, adjusting the CA into the “safe zone”. The Harris Hip Score (HHS) was used to evaluate hip joint function. Computerised tomography scanning was used to measure the anteversion angles. ## Results All patients were followed up without any dislocation. Preoperative and 12 months after surgery, the mean HHS were 43.3 ± 2.6 (38-47) and 88.1 ± 3.3 (78-9

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Author

Biao Zhu; Changzheng Su; Yeteng He; Xingyu Chai; Zhen Li; Zhenyang Hou; Tengteng Lou; Xinfeng Yan

Publisher

SAGE Publications

Published

2017

Language

EN

Field

Medicine (Health Sciences)