Bloom R A, Libson E, Lax E, Pogrund H
Skeletal Radiol. 1986;15(6):455-7. doi: 10.1007/BF00355105.
The assimilated os sustentaculi is a projection of bone from the medial aspect of the sustentaculum tali which is surmounted by a similar projection from the medial tubercle of the talus. The accessory joint so formed may develop secondary osteoarthritis changes. This congenital anomaly is very rare. The present report is of 2 additional cases.