title: Incidence of accessory ossicles and sesamoid bones in the feet: a radiographic study of the Turkish subjects.
abstract: Most accessory ossicles and sesamoid bones of the ankle and the foot remain asymptomatic; however, they have increasingly been examined in the radiology literature, because they can cause painful syndromes or degenerative changes in response to overuse and trauma. Our aim was to document a detailed investigation on the accessory ossicles and sesamoid bones of Turkish subjects in both the feet according to the sex, frequency and division of the bones, coexistence and bilaterality by radiography. A double-centered study was performed retrospectively to determine the incidence of the accessory ossicles and sesamoid bones in the ankle and foot. Accessory ossicles (21.2%) and sesamoid bones (9.6%) were detected by Radiographs of 984 subjects. The most common accessory ossicles were accessory navicular (11.7%), os peroneum (4.7%), os trigonum (2.3%), os supranaviculare (1.6%), os vesalianum (0.4%), os supratalare (0.2%), os intermetatarseum (0.2%). We observed bipartite hallux sesamoid in 2.7% of radiographs. Interphalangeal sesamoid bone of the hallux was seen in 2% of radiographs. Incidences of metatarsophalangeal sesamoid bones were found as 0.4% in the second digit, 0.2% third digit, 0.1% fourth digit and 4.3% fifth digit. We also identified the coexistencies of two different accessory ossicles as 6%, accessory ossicles and sesamoid bones as 7%, and bipartite sesamoid bones and sesamoid bones as 1.9%. Distribution of the most common accessory ossicles in male and female subjects was similar. We reported the incidence of accessory ossicles and sesamoid bones of the feet in Turkish adult population.
authors.affiliation: Department of Anatomy, Akdeniz University Faculty of Medicine, 07070, Antalya, Turkey, nigarc@akdeniz.edu.tr.
authors.forename: Nigar
authors.initials: N
authors.lastname: Coskun
authors.forename: Mehtap
authors.initials: M
authors.lastname: Yuksel
authors.forename: Metin
authors.initials: M
authors.lastname: Cevener
authors.forename: R Yavuz
authors.initials: RY
authors.lastname: Arican
authors.forename: Hakan
authors.initials: H
authors.lastname: Ozdemir
authors.forename: Oguz
authors.initials: O
authors.lastname: Bircan
authors.forename: Timur
authors.initials: T
authors.lastname: Sindel
authors.forename: Sezgin
authors.initials: S
authors.lastname: Ilgi
authors.forename: Muzaffer
authors.initials: M
authors.lastname: Sindel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016009:Chi-Square Distribution; D005260:Female; D005529:Foot Bones / Q000002:abnormalities* / Q000000981:diagnostic imaging; D005530:Foot Deformities / Q000000981:diagnostic imaging* / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012189:Retrospective Studies; D014421:Turkey / Q000453:epidemiology