title: Symptomatic os subfibulare caused by accessory ossification: a case report.
abstract: Separated ossicles at the tip of the lateral malleolus, the condition known as os subfibulare, are sometimes a cause of ankle pain. There are two theories regarding the origin of os subfibulare. One theory proposes that it is caused by an avulsion fracture attributable to pull of the anterior talofibular ligament, whereas the other theory proposes that it is the result of an accessory ossification center. However, some authors have reported that os subfibulare is an avulsion fracture and few reports of accessory ossification have been described recently. A patient with os subfibulare that may have been caused by accessory ossification rather than an avulsion fracture was treated by the current authors.
authors.affiliation: Department of Orthopaedics, Shimane Medical University 89-1, Enya-cho, Izumo, Shimane 693-8501, Japan.
authors.forename: Taisuke
authors.initials: T
authors.lastname: Kono
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Ochi
authors.forename: Masato
authors.initials: M
authors.lastname: Takao
authors.forename: Kohei
authors.initials: K
authors.lastname: Naito
authors.forename: Yuji
authors.initials: Y
authors.lastname: Uchio
authors.forename: Kazunori
authors.initials: K
authors.lastname: Oae
mesh_terms: D000293:Adolescent; D016512:Ankle Injuries / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D000843:Ankle Joint / Q000000981:diagnostic imaging / Q000503:physiopathology; D001182:Arthroscopy / Q000379:methods*; D005360:Fibula / Q000000981:diagnostic imaging / Q000473:pathology*; D005500:Follow-Up Studies; D005599:Fractures, Ununited / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009999:Ossification, Heterotopic / Q000150:complications*; D010147:Pain Measurement; D011859:Radiography; D020127:Recovery of Function; D016896:Treatment Outcome