Outcome of Dual Mobility in Primary Total Hip Arthroplasty

Hadian, Mahdi; Motififard, Mehdi; Parhamfar, Mohammad; Assadi, Alireza; Karimie, Maryam

doi:10.22034/ijos.2025.243320

Outcome of Dual Mobility in Primary Total Hip Arthroplasty

Document Type : Original Article

Authors

Mahdi Hadian ¹

Mehdi Motififard ²

Mohammad Parhamfar ²

Alireza Assadi ³

Maryam Karimie ²

¹ Department of orthopedic Isfahan university of medical science isfahan iran

² Department of orthopedic isfahan university of medical science isfahan iran

³ MD, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

10.22034/ijos.2025.243320

Abstract

Abstract
Introduction: Dual mobility (DM) implants have been increasingly adopted in total hip arthroplasty (THA) to reduce the risk of postoperative instability. However, evidence comparing DM and conventional THA in Middle Eastern populations remains limited.
Materials & Methods: In a retrospective case-control study the patients who had undergone primary unilateral THA in one year at two major medical centers were evaluated. The case-group received DM implants, and the control- group had conventional THA. Within a one-year follow-up, the pain (Numeric Rating Scale), hip function (Harris Hip Score), and quality of life (EQ-5D), and Postoperative complications were compared.
Results & Discussion: The 86 patients studied included 42 DM and 44 conventional THA cases. Both groups experienced significant improvement in pain, function, and quality of life at one-year follow-up. The DM group demonstrated greater improvements in EQ-5D scores and higher postoperative HHS compared to the conventional group. The only dislocation (4.6%) in the conventional-group had no statistically significance. Other postoperative complications, including infection and DVT, were comparable between the groups.
Conclusion: DM hip arthroplasty was associated with more favorable postoperative functional recovery and quality of life outcomes, without a significant increase in complications, in short-term follow-up. These findings support the broader application of DM implants in primary THA, although further prospective studies are needed to assess the long-term outcomes and also cost-effectiveness.

Keywords

Total Hip Arthroplasty

Hip Prosthesis

Treatment Outcome

Subjects