John Hunter's MSK Teaching File
Interesting MRI Cases from University of Washington Department of Radiology

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Case 26c

17 y/o female ballerina who complains of pinching in the posteromedial aspect of her left ankle when she is on point. The plain films showed a posterior process of the talus without os trigonum, and no evidence of reaction between this structure and the calcaneus.

Weight-bearing (on point) lateral of left foot + sagittal FSE image:

Axial and coronal FSE with fat sat:

Case 26c Discussion