AB216. SOH25_AB_083. Revision total hip arthroplasty using a bipolar head & enhanced stability liner results in excellent postoperative stability
Orthopaedic Posters

AB216. SOH25_AB_083. Revision total hip arthroplasty using a bipolar head & enhanced stability liner results in excellent postoperative stability

Austin Shaji1,2, Tom Doyle2, Gerard Sheridan2, Stephen Kearns2, Colin Murphy2

1School of Medicine, College of Medicine, Nursing, and Health Sciences, University of Galway, Galway, Ireland; 2Department of Orthopaedic Surgery, Galway University Hospital, Galway, Ireland

Background: Dislocation is a devastating complication following total hip arthroplasty (THA), with a higher risk in revision cases. Multiple techniques to reduce instability risk exist, although evidence for the use of bipolar heads and enhanced stability liners (ESL) in revision THA remains limited.

Methods: A 15-year retrospective review of all revision THAs at a single institution was conducted. Patients undergoing revision with bipolar heads and ESLs, excluding infection cases, were included if they had a minimum 2-year follow-up.

Results: There were 46 patients available for inclusion with a mean age of 74.3±10.4 years, body mass index (BMI) of 30.7±2.9 kg/m2 and The American Society of Anesthesiologists (ASA) grade of 2.5±0.5. The mean follow-up was 88.3±51.9 months. All patients were deemed high risk for instability, with 25 patients (54%) revised for THA instability. The mean acetabular cup size was 62.4±4.4 mm while the mean outer diameter of the bipolar head was 42.4±2.9 mm. There were 3 post-revision dislocations (6.5%) all of which occurred in patients with primary THA instability. Two were atraumatic dislocations occurring within 14 days of surgery. There was one traumatic dislocation following a fall which was ultimately revised for recurrent dislocation, resulting in an all-cause and instability revision rate of 2.2%. There were 14 instances of mortality at a mean of 66±35 months.

Conclusions: Revision THA with a bipolar head and ESL results in excellent postoperative hip stability in high-risk revision patients.

Keywords: Total hip replacement; arthroplasty; revision; dislocation; instability

Acknowledgments

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Footnote

Funding: None.

Conflicts of Interest: The authors have no conflicts of interest to declare.

Ethical Statement: The authors are accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0/.

doi: 10.21037/map-25-ab216
Cite this abstract as: Shaji A, Doyle T, Sheridan G, Kearns S, Murphy C. AB216. SOH25_AB_083. Revision total hip arthroplasty using a bipolar head & enhanced stability liner results in excellent postoperative stability. Mesentery Peritoneum 2025;9:AB216.

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