Intraprosthetic Dislocation of Dual Mobility Total Hip Arthroplasty: A Case Report and Review of Literature

First introduced in Europe in the 1970s, dual mobility total hip arthroplasty (DM-THA) has gained popularity over years due to the reduced dislocation rates compared to standard THA. However, intraprosthetic dislocation (IPD), a rare complication where the femoral head separates from the polyethylen...

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Bibliographic Details
Published in:Journal of orthopaedic case reports 2023-03, Vol.13 (3), p.50-53
Main Authors: Shaikh, Ashraf, Desai, Mohan, Somani, Vasav, Shahare, Pratik, Agarwal, Rishi
Format: Article
Language:English
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Case Report
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Summary:First introduced in Europe in the 1970s, dual mobility total hip arthroplasty (DM-THA) has gained popularity over years due to the reduced dislocation rates compared to standard THA. However, intraprosthetic dislocation (IPD), a rare complication where the femoral head separates from the polyethylene (PE) liner, remains a potential complication. A 67-year-old female presented with a transcervical neck of femur fracture. She was managed with a DM-THA. She dislocated her THA on post-operative day 18. Closed reduction was performed for the same under general anesthesia. However, she again dislocated her hip 2 days later. CT scan was done and an IPD was diagnosed. The PE liner was revised and the patient had a good outcome at 1 year follow-up. When a DM-THA dislocates, it is important to consider the possibility of IPD which is a rare but unique complication associated with these systems. The recommended treatment for IPD is open reduction and replacement of the PE liner.
ISSN:2250-0685
2321-3817
DOI:10.13107/jocr.2023.v13.i03.3580