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Intraprosthetic Dislocation Following Dual-Mobility Total Hip Arthroplasty: A Case Report
Abhinandan S Punit1, Akshay Nayak1, Yathisha Sr1
1Orthopaedic Surgery, Narayana Health City Hospital, Bengaluru, IND.
Cureus
|May 18, 2026
Summary
Intraprosthetic dislocation is a rare complication of dual-mobility hip implants, causing failure even in modern designs. Early diagnosis via imaging is key for successful treatment with component exchange.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Materials Science
Background:
- Dual-mobility total hip arthroplasty (DMTHA) enhances stability and reduces dislocation risk.
- However, DMTHA implants can fail through intraprosthetic dislocation (IPD), where the femoral head disengages from the liner.
- IPD is clinically significant but can be challenging to diagnose initially.
Keywords:
dual-mobility total hip arthroplastyhip instabilityimplant failureintraprosthetic dislocationpolyethylene liner dislocationrevision hip arthroplasty