Revision THA Post Resurfacing Arthroplasty
Femoral neck fracture and aseptic loosening of either acetabular or femoral component are the most frequent indications of revision of HRA. Among other infections and metallosis, with or without adverse local tissue reactions (ALTRs), are other revision reasons . Several risk factors have been implicated; however, their role is not fully understood. Female sex is considered as a risk factor for HRA revision mainly due to the smaller implant size that is used for them . Older people especially over the age of 55 years old have worse bone quality that further increase the risk for revision [2, 3]. Implant factors, including decreased component size and malpositioning, have been also recognized as risk factors .
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