Liner Dissociation and Acetabular Erosion Treated by Implant Retention and Dual-Mobility Liner Cementation

Abstract

Case: A 56-year-old woman underwent a left total hip arthroplasty (THA) after developing avascular necrosis after chemotherapeutic treatment of breast cancer. She presented approximately 2 years after index THA with left groin pain and complaints of instability. Imaging revealed pseudodislocation of the ceramic femoral head with erosion through the acetabular component. Intraoperative evaluation revealed a dissociated polyethylene liner, damaged acetabular locking mechanism, metallosis, and well-fixed and aligned components. Treatment consisted of component retention, bone grafting, and dual-mobility liner cementation into the acetabular component. Disclosure: The Disclosure of Potential Conflicts of Interest forms are provided with the online version of the article (http://links.lww.com/JBJSCC/B906).