Female, 48 years old. Thumb MP pain, concern for ulnar collateral ligament injury. A small focus of low signal intensity seen on coronal image 7 of series 1101 may represent the suspected ulnar collateral ligament avulsion fracture fragment seen on recent radiographs. However, there is no edema in the adjacent soft tissue or bone, suggesting this is chronic. On the short TE images there is intermediate signal intensity within the UCL that may reflect old injury and scarring, but we see no displaced tear of the ligament itself. Bone marrow signal intensity is normal. We see no abnormality of the flexor/extensor tendon apparatus.
Findings compatible with a chronic ulnar collateral ligament injury with a mildly displaced avulsion fracture fragment better seen on recent radiographs.