The assimilated os sustentaculi.
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.
D000328:Adult; D000843:Ankle Joint / Q000000981:diagnostic imaging; D002111:Calcaneus / Q000002:abnormalities* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D011859:Radiography; D013628:Talus / Q000002:abnormalities* / Q000000981:diagnostic imaging