The Archives of Bone and Joint Surgery

The Archives of Bone and Joint Surgery

The Outcomes of Total Hip Arthroplasty in Patients with Hip Dysplasia

Document Type : RESEARCH PAPER

Authors
Mohamadreza Daryaee 1
Mahdieh Samei 1
Reza Abdi 2
Alireza Mousavian 2
Omid Shahpari 1
1 Orthopedics Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
2 Orthopedics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
10.22038/abjs.2026.85596.3902
Abstract
Objectives: This study aimed to assess function, patient satisfaction, and quality of life before and after total hip arthroplasty (THA) in patients with different types of dysplastic hips.
Methods: This prospective, single-group, pre–post interventional study included patients with hip dysplasia who underwent THA at Imam Reza and Ghaem hospitals in Mashhad, Iran, between 2018 and 2022. The collected data included surgical details, pain intensity assessed using the visual analog scale (VAS), Hip Disability and Osteoarthritis Outcome Score (HOOS), Harris Hip Score (HHS), quality of life (QOL), leg length discrepancy (LLD), and abductor muscle strength. These variables were evaluated before surgery and at least two years postoperatively. Statistical significance was set at a P-value of less than 0.05.
Results: The study included 43 dysplastic hips. Of the patients, eight (18.60%) were male and 35 (81.40%) were female, with a mean age of 43.28 ± 10 years. Functional outcomes improved significantly after THA compared with the preoperative status, as reflected by improvements in HHS from 45.58 to 84.60 (P < 0.001), HOOS from 32.98 to 77.39 (P < 0.001), VAS from 74.56 to 0.28 (P < 0.001), QOL from 30.35 to 74.56 (P < 0.001), and LLD from 2.88 to 0.70 (P < 0.001). However, no significant association was observed between preoperative and postoperative complication rates (P > 0.05).
Conclusion: The assessment of THA outcomes in patients with developmental dysplasia of the hip (DDH) showed that this procedure improved function, patient satisfaction, and quality of life while substantially reducing pain. However, this analysis did not specifically compare outcomes according to the surgical approach, implant type, or type of shortening osteotomy used.
Level of evidence: IV
Keywords
Developmental dysplasia of the hip
Hip replacement
Outcome
Total hip arthroplasty
Subjects
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The Archives of Bone and Joint Surgery
Volume 14, Issue 11
November 2026
Pages 735-741

  • Receive Date 26 January 2025
  • Revise Date 18 May 2026
  • Accept Date 24 May 2026