RESEARCH ARTICLE


Lower Dislocation Rate Following Total Hip Arthroplasty via Direct Anterior Approach than via Posterior Approach: Five-Year-Average Follow-Up Results



Sachiyuki Tsukada*, Motohiro Wakui
Department of Orthopaedic Surgery, Nekoyama Miyao Hospital, 14-7 Konan, Chuo-ku, Niigata, Niigata, 950-1151, Japan


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© Tsukada and Wakui.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Orthopaedic Surgery, Nekoyama Miyao Hospital, 14-7 Konan, Chuo-ku, Niigata, Niigata, 950-1151, Japan; Tel: +81-25-282-2323; Fax: +81-25-281-7331; E-mail: s8058@nms.ac.jp


Abstract

Objective:

The aim of the study was to compare the dislocation rate between total hip arthroplasty (THA) via direct anterior approach (DAA) and via posterior approach (PA).

Methods:

We compared a consecutive series of 139 THAs via DAA with 177 THAs via PA. All study patients received ceramic-on-ceramic bearing surfaces and similar uncemented prostheses. Dislocation-free survival after THA was estimated using the Kaplan–Meier survival method and compared between groups using the log-rank test.

Results:

In the DAA group, none of 139 hips experienced dislocations in five-year-average follow-up. In the PA group, seven hips experienced dislocations among 177 hips (4 %). The dislocation was significantly less in the DAA group compared to the PA group (p = 0.033).

Conclusion:

The dislocation rate of THA via DAA was significantly less than that of THA via PA.

Keywords: Heuter, intermuscular, instability, minimally invasive, muscle-sparing, Smith-Peterson, total hip arthroplasty.