title: A failure of the locking system of the acetabular assembly in a total hip replacement.
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011475:Prosthesis Failure; D011859:Radiography; D013585:Synovitis / Q000601:surgery*; D013586:Synovitis, Pigmented Villonodular / Q000601:surgery*