Presentation
Right ankle pain.
Patient Data
Age: 14 years
Gender: Male
From the case:
Os subfibulare
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Well corticated ossicle at the tip of the lateral malleolus. No acute fracture. Soft tissue swelling over the lateral malleolus.
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Lateral malleolus avulsion fracture (Weber A) with associated soft tissue swelling.
Case Discussion
Most os subfibulare are thought to be traumatic in origin, especially when the trauma occurs in childhood. This case clearly demonstrates the formation of a post traumatic os subfibulare.
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