title: Osteochondritis dissecans of the subtalar articular facet: an unusual diagnosis.
abstract: Osteochondritis dissecans of the talus is classically characterized by an abnormality of the articular cartilage of the talar dome. We report a rare case of a lesion of the subtalar facet in a 10-year-old boy. The lesion was responsible for a painful ankle with secondary instability. The diagnosis was made using plain radiographs and CT, which showed a well-circumscribed osteochondral fragment demarcated from the adjacent bone by a radiolucent line. The clinical outcome was favourable after a 6-week period with a non-weight-bearing short-leg cast.
authors.affiliation: Department of Paediatric Orthopaedics, Armand Trousseau Hospital, 26 avenue du Docteur Arnold Netter, 75571, Paris Cedex 12, France.
authors.forename: Faouzi
authors.initials: F
authors.lastname: Madi
authors.forename: Raphaël
authors.initials: R
authors.lastname: Vialle
authors.forename: Pierre
authors.initials: P
authors.lastname: Mary
authors.forename: Hubert
authors.initials: H
authors.lastname: Ducou le Pointe
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Damsin
authors.forename: Georges
authors.initials: G
authors.lastname: Filipe
mesh_terms: D002358:Cartilage, Articular / Q000000981:diagnostic imaging / Q000473:pathology; D002648:Child; D006801:Humans; D008297:Male; D010008:Osteochondritis Dissecans / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed; D021801:Zygapophyseal Joint / Q000473:pathology*