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Total Hip Arthroplasty Via Direct Anterior Approach for Osteonecrosis; Comparison With Primary Hip Osteoarthritis in a Mid Term Follow Up Publisher



Moharrami A1 ; Mirghaderi SP1, 2 ; Marzban S1 ; Moazenjamshidi SMM1 ; Shakoor D1 ; Mortazavi SMJ1
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Authors Affiliations
  1. 1. Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran

Source: Journal of Clinical Orthopaedics and Trauma Published:2022


Abstract

Background: To determine the mid-term outcomes of conventional cementless Total Hip Arthroplasty (THA) in patients with avascular necrosis (AVN) of the femoral head and compare to patients with primary hip osteoarthritis (OA). Method: A total of 330 consecutive primary THA procedures (AVN and OA) performed between 2010 and 2013 by a single surgeon and in a single center using the direct anterior approach (DAA) were included. Assessments including SF-36, WOMAC, and Harris Hip Scores (HHS) were retrieved from patients before the surgery and at the latest follow-up. Clinical and functional outcomes were compared between the AVN and OA groups. Results: A total of 294 consecutive THA (AVN = 107, OA = 187) with 104.4 ± 6.2 months follow-up were analyzed, which AVN patients were significantly younger (32.0 vs. 59.6 y/o). Corticosteroid 34 (31.8%), idiopathic AVN 31 (29.0%) and use of unapproved weight gain supplements (UWGS) 23 (21.5%) were the main reasons for AVN. Despite that preoperative scores were comparable (P > 0.05), the HHS, SF-36, and WOMAC scores are significantly higher in the AVN group after THA surgery (P < 0.05). Moreover, flexion and abduction ROM were significantly higher in the AVN group (P < 0.05). Regarding each complication, no significant difference was observed between groups. In the whole sample, there were 5 (1.7%) revisions due to loosening of acetabular components, all the OA group (P > 0.05). Conclusion: Conventional cementless THA with highly cross-linked polyethylene provides satisfactory mid-term results in patients with AVN with a low rate of postoperative complications. Compared to primary OA patients, this group reaches superior postoperative scores. © 2022 Delhi Orthopedic Association
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