Early migration of uncemented porous coated anatomic femoral component related to aseptic loosening.

摘要: Primary total hip arthroplasties were performed in 108 patients (116 hips) using a porous coated anatomic (PCA) system. Nineteen (22 of who had subsidence PCA femoral stem more than 3 mm studied for the time onset, amount subsidence, and outcomes. A minimum follow-up period was seven years. The average age at operation 37.4 operative diagnosis avascular necrosis head hips; osteoarthrosis secondary to childhood septic joint six; fracture neck three; miscellaneous six hips. preoperative Harris score 57 points, which improved 82 points seven-year examination. Overall, there 79% prevalence thigh pain (15 patients). Six occasional, nondisabling, activity-related pain. remaining nine persistent disabling final All stems an undersized component one or both planes. One stabilized by bone ingrowth. Twelve hips fixed fibrous tissue ingrowth occasional clinical symptoms. Nine loosening examination, four revised five pending revision. Early instability measured radiographs correlated with predictive late radiographic component.