title: Painful bipartite patellae. A report of three cases.
abstract: This is a report of three children with tender painful patellae, bipartite at the superior, lateral pole. Non-operative treatment failed to relieve these symptoms, but excision of the accessory ossification center resulted in a painless knee. Gross and microscopic pathological examination was consistent with the hypothesis that this syndrome was caused by fracture through the interposed cartilage which failed to heal satisfactorily.
mesh_terms: D000293:Adolescent; D001847:Bone Diseases / Q000145:classification / Q000000981:diagnostic imaging / Q000601:surgery; D050723:Fractures, Bone / Q000150:complications; D006801:Humans; D008297:Male; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging / Q000601:surgery; D010146:Pain / Q000601:surgery*; D010329:Patella / Q000000981:diagnostic imaging / Q000293:injuries / Q000601:surgery; D011859:Radiography