Accessory navicular bone

Case contributed by Jack Ren

Presentation

Medial foot pain

MRI

There is an accessory  bone located on patient's posteromedial tuberosity of the tarsal navicular bone. The accessory bone has a cartilaginous connection to the navicular best seen on T2 sequence which suggests it is a type II accessory navicular bone.

Case Discussion

Accessory navicular bones are also known as os tibiale externum or os naviculare and are considered a normal anatomical variant; although it can cause a painful tendinosis. 

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Case information

rID: 23772
Case created: 7th Jul 2013
Last edited: 29th Oct 2017
Inclusion in quiz mode: Included

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