Case Discussion
Os tibiale externum (accessory navicular) is a large ossicle adjacent to the medial side of the navicular bone. The tibialis posterior tendon often inserts with a broad attachment onto the ossicle, which may cause a painful tendinosis due traction between the ossicle and the navicular. Such changes are best seen on MRI.
Credit: Dr Donna D'Souza.
Unable to process the form. Check for errors and try again.