title: Protrusio acetabuli: radiographic appearance in arthritis and other conditions.
abstract: Normal radiographic anatomic relationships, as well as distortion of those relationships in protrusio acetabuli, have been described. The occurrence of this deformity in arthropathies is stressed and other entities are mentioned and illustrated. Standard anteroposterior hip or pelvis radiographs readily permit the detection of protrusio acetabuli.
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging*; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging*; D001859:Bone Neoplasms / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D009101:Multiple Myeloma / Q000000981:diagnostic imaging; D010001:Osteitis Deformans / Q000000981:diagnostic imaging; D011859:Radiography; D013167:Spondylitis, Ankylosing / Q000000981:diagnostic imaging