Radiological study of Os trigonum and its clinical significance
Background: Os trigonum (OST) is commonly located on the posterior aspect of Conga the talus.It occurs as a result of secondary ossification center failing to fuse with the lateral tubercle of the posterior process of the talus; its incidence varies between 2 and 25%, and is more often bilateral.It occurs as an intra-articular Os, which is most oft