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Introduction <p>Femoral neck fractures are among the most common injuries in the elderly, and total hip arthroplasty is increasingly preferred due to superior functional outcomes and lower reoperation rates; however, instability and dislocation remain major concerns with conventional fixed-bearing total hip arthroplasty. Dual mobility total hip arthroplasty has been introduced to reduce these complications.</p> Methods <p>This retrospective analytical study included 335 patients aged over 55&#xa0;years with AO/OTA type 31B or 31C femoral neck fractures who underwent total hip arthroplasty between January 2015 and December 2023 at a single tertiary care center in South India, of whom 178 received fixed-bearing total hip arthroplasty and 157 underwent dual mobility total hip arthroplasty. Functional outcomes were assessed using the Oxford Hip Score and Harris Hip Score, and complications including dislocation, revision surgery, infection, peri-prosthetic fracture, deep vein thrombosis, and heterotopic ossification were analyzed.</p> Results <p>Patient-reported outcome measures using the Oxford Hip Score were significantly better in the dual mobility group compared to the fixed-bearing group (42.08 ± 5.7 vs. 37.47 ± 5.97). Harris Hip Scores at both 3&#xa0;months (78.04 ± 8.05 vs. 72.08 ± 7.74) and 12&#xa0;months (87.29 ± 8.28 vs. 81.17 ± 8.16) were also superior in the dual mobility group. Although the rates of dislocation and revision surgery were lower in patients treated with dual mobility implants, the difference was not statistically significant, and no significant differences were observed between the two groups with respect to infection, peri-prosthetic fracture, deep vein thrombosis, or heterotopic ossification.</p> Discussion <p>Dual mobility total hip arthroplasty provides better functional outcomes with lower rates of dislocation and revision in elderly patients with femoral neck fractures and may be considered a favorable option, particularly in patients at increased risk of instability.</p> <i>Level of evidence</i> <p>Level III, retrospective comparative study.</p>

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Functional Outcomes and Complications of Dual Mobility Versus Fixed-Bearing Total Hip Arthroplasty in Femoral Neck Fractures over 55 Years: A Retrospective Analysis

  • 期刊论文

  • 发表日期：

    2026年2月22日

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  • Sunil Dhondiram Magadum,
  • Prithvi Mohandas

摘要

Introduction

Femoral neck fractures are among the most common injuries in the elderly, and total hip arthroplasty is increasingly preferred due to superior functional outcomes and lower reoperation rates; however, instability and dislocation remain major concerns with conventional fixed-bearing total hip arthroplasty. Dual mobility total hip arthroplasty has been introduced to reduce these complications.

Methods

This retrospective analytical study included 335 patients aged over 55 years with AO/OTA type 31B or 31C femoral neck fractures who underwent total hip arthroplasty between January 2015 and December 2023 at a single tertiary care center in South India, of whom 178 received fixed-bearing total hip arthroplasty and 157 underwent dual mobility total hip arthroplasty. Functional outcomes were assessed using the Oxford Hip Score and Harris Hip Score, and complications including dislocation, revision surgery, infection, peri-prosthetic fracture, deep vein thrombosis, and heterotopic ossification were analyzed.

Results

Patient-reported outcome measures using the Oxford Hip Score were significantly better in the dual mobility group compared to the fixed-bearing group (42.08 ± 5.7 vs. 37.47 ± 5.97). Harris Hip Scores at both 3 months (78.04 ± 8.05 vs. 72.08 ± 7.74) and 12 months (87.29 ± 8.28 vs. 81.17 ± 8.16) were also superior in the dual mobility group. Although the rates of dislocation and revision surgery were lower in patients treated with dual mobility implants, the difference was not statistically significant, and no significant differences were observed between the two groups with respect to infection, peri-prosthetic fracture, deep vein thrombosis, or heterotopic ossification.

Discussion

Dual mobility total hip arthroplasty provides better functional outcomes with lower rates of dislocation and revision in elderly patients with femoral neck fractures and may be considered a favorable option, particularly in patients at increased risk of instability.

Level of evidence

Level III, retrospective comparative study.