Accessory ossicle or intraepiphyseal fracture of lateral malleolus: are we familiar with these?

A case of intraepiphyseal injury (type 7) to the lateral malleolus in a 11 year old child is described. This rare injury cannot be classified by commonly used Salter Harris classification for epiphyseal injury. Although less common, accessory ossicle of the malleoli is an important differential diagnosis for such injury. Details of type 7 intraepiphyseal injuries and accessory ossicle are described.