title: Instability of the ankle due to a separate centre of ossification in the lateral malleolus.
abstract: A case of recurrent instability of the ankle is reported. It was associated with a separate centre of ossification in the lateral malleolus. While such extra ossification centres for both malleoli are recognized, they have not hitherto been incriminated as a cause of instability. The successful treatment of this case is described and the incidence and significance of separate ossification centres for the malleoli are discussed.
mesh_terms: D000293:Adolescent; D000843:Ankle Joint / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000209:etiology*; D009999:Ossification, Heterotopic / Q000150:complications* / Q000000981:diagnostic imaging; D011542:Pseudarthrosis / Q000150:complications; D011859:Radiography; D012008:Recurrence