title: Talonavicular coalition following avascular necrosis of the tarsal navicular.
abstract: A 9-year follow-up of a case of acquired talonavicular coalition following avascular necrosis of the tarsal navicular is presented. A review of the literature suggests that this is the only reported case of acquired talonavicular coalition.
mesh_terms: D002675:Child, Preschool; D005413:Flatfoot / Q000209:etiology; D006801:Humans; D008297:Male; D009336:Necrosis; D009999:Ossification, Heterotopic / Q000209:etiology*; D010007:Osteochondritis / Q000150:complications*; D011859:Radiography; D013628:Talus / Q000000981:diagnostic imaging / Q000473:pathology; D013639:Tarsal Bones / Q000098:blood supply / Q000000981:diagnostic imaging / Q000473:pathology