title: Differential diagnosis in a professional basketball player with foot pain: is it an avulsion fracture or an os supranaviculare?
abstract: The os supranaviculare is an accessory bone located on the dorsal aspect of the talonavicular joint close to the midpoint. This rare incidental skeletal variant has an estimated prevalence of 1%. It may rarely become symptomatic and should not be confused with cortical avulsion fractures of navicular or talar head. We present the case of a 25-year-old professional basketball player with pain on the dorsum of his right foot after twisting his ankle during a regular season match. Magnetic resonance imaging findings of the player's foot represented a flake of bone on the superior part of the talar head. The differential diagnosis and clinical outcome of this unusual case are briefly discussed.
authors.affiliation: Department of Anatomy, Medicine Faculty of Hacettepe University, Ankara, Turkey. abayramo@hacettepe.edu.tr
authors.forename: Alp
authors.initials: A
authors.lastname: Bayramoğlu
authors.forename: Deniz
authors.initials: D
authors.lastname: Demiryürek
authors.forename: Ayşegül
authors.initials: A
authors.lastname: Firat
authors.forename: Ali
authors.initials: A
authors.lastname: Oznur
authors.forename: M Hakan
authors.initials: MH
authors.lastname: Ozsoy
mesh_terms: D000328:Adult; D016512:Ankle Injuries / Q000175:diagnosis / Q000209:etiology*; D001490:Basketball / Q000293:injuries*; D003937:Diagnosis, Differential; D050723:Fractures, Bone / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D011859:Radiography; D013628:Talus / Q000000981:diagnostic imaging / Q000293:injuries*; D013639:Tarsal Bones / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000293:injuries*