Volume 4, 2018
|Number of page(s)||5|
|Published online||21 February 2018|
Early results of total hip arthroplasty using dual-mobility cup in patients with osteonecrosis of the femoral head
Department of Orthopedic Surgery, Lebanese American University-Rizk Hospital,
2 Department of Orthopedic Surgery, Middle East Institute of Health, Bsalim, Lebanon
3 Department of orthopedic Surgery, Centre Hospitalier Universitaire de Nîmes, Nîmes, France
4 Center for Evidence-based Anatomy, Sports & Orthopedic Research, Jdeideh, Lebanon
* Corresponding author: firstname.lastname@example.org
Accepted: 28 December 2017
Introduction: Osteonecrosis of the femoral head (ONFH) remains a therapeutic challenge for patients undergoing total hip arthroplasty (THA). The majority of these patients are young with high functional demand, and show an increased risk of dislocation following surgery than patients with osteoarthritis. The use of double mobility cup (DMC) has been linked with lower rates of complications when compared to conservative cups; however, the literature is scarce over DMC results in patients with ONFH. The aim of the study is to report the early outcomes of patients with ONFH treated with THA-DMC. Materials: A retrospective analysis of patients suffering from ONFH who underwent THA using DMC (THA-DMC) from 2006 to 2015 were evaluated for functional status and risk of post-operative complications. Thirty THA-DMC in 26 patients with a mean follow-up of 51 months were evaluated clinically (modified Hip Harris Score) and radiologically. Results: The mean age of the included patients was 54.9 years. At final follow-up, the mean modified Hip Harris score was 98.7 ± 2.7 and no dislocation episodes or revision surgeries were recorded. The radiological assessment revealed no signs of migration/tilting, radiolucent lines, periprosthetic osteolysis or heterotopic ossification over the DMC component and the femoral stem. The survival rate over 51 months of follow-up was 100%. Discussion: The use of the new generation of dual mobility cup in patients with ONFH showed excellent functional early results with no major complications such as dislocation.
Key words: total hip arthroplasty / dual mobility cup / revision surgery / dislocation / survivorship
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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