Michael R Whitehouse1, Clive P Duncan. 1. Musculoskeletal Research Unit, Southmead Hospital, School of Clinical Sciences, University of Bristol, 1st Floor Learning and Research Building, Bristol, BS10 5NB, UK, michael.whitehouse@bristol.ac.uk.
Abstract
PURPOSE: Adverse local soft tissue reactions can occur in response to wear debris or corrosion products released from total hip arthroplasty (THA). Hip arthroscopy is a useful diagnostic adjunct in the investigation of painful THA. METHODS: A patient with a painful primary metal-on-highly cross-linked polyethylene THA underwent hip arthroscopy to confirm the diagnosis of trunnion corrosion. RESULTS: The prosthetic implants were well fixed and aligned with no indication of infection. Hip arthroscopy was used to confirm the presence of corrosion on the trunnion of a titanium stem at its junction with a cobalt-chrome head. Due to persistent symptoms, the patient subsequently underwent arthrotomy, which confirmed the diagnosis, and revision hip arthroplasty to a titanium adapter sleeve, ceramic head and liner exchange, with relief of his symptoms. CONCLUSION: Hip arthroscopy may prove a useful additional diagnostic tool in the investigation of this emerging clinical entity.
PURPOSE: Adverse local soft tissue reactions can occur in response to wear debris or corrosion products released from total hip arthroplasty (THA). Hip arthroscopy is a useful diagnostic adjunct in the investigation of painful THA. METHODS: A patient with a painful primary metal-on-highly cross-linked polyethylene THA underwent hip arthroscopy to confirm the diagnosis of trunnion corrosion. RESULTS: The prosthetic implants were well fixed and aligned with no indication of infection. Hip arthroscopy was used to confirm the presence of corrosion on the trunnion of a titanium stem at its junction with a cobalt-chrome head. Due to persistent symptoms, the patient subsequently underwent arthrotomy, which confirmed the diagnosis, and revision hip arthroplasty to a titanium adapter sleeve, ceramic head and liner exchange, with relief of his symptoms. CONCLUSION: Hip arthroscopy may prove a useful additional diagnostic tool in the investigation of this emerging clinical entity.
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