Fig. 15From: Sesamoids and accessory ossicles of the foot: anatomical variability and related pathologyDegeneration at a synchondrosis. a Long-axis axial CT image shows an apparently normal type II accessory navicular (arrow) with a preserved synchondrosis with the navicular tubercle. b In comparison, this long-axis axial CT image of a different foot depicts increased sclerosis and fragmentation of a type II accessory navicular (white arrow) and fragmentation of the navicular tubercle at the synchondrosis (black arrow) consistent with degenerative changeBack to article page