Perthes lesion

Case contributed by Andrew Lawson

Presentation

Multiple dislocations, now unstable.

Patient Data

Age: 17 years
Gender: Male
mri

There is a shallow Hill Sachs deformity, no edema, measures 11 x 2 mm. There is 10% anteroinferior glenoid deficiency. The anterior labrum is detached form the cartilage but remains attached to the periosteum, consistent with a Perthes lesion (best seen on the ABER view). This is 3 to 5 o'clock. The tear extends superiorly into the bicipitolabral anchor causing a type III slap appearance. Humeral stripping of the central portion of the IGHL. Anterior band intact. Rotator cuff intact. The ACJ is unremarkable.

Annotated image

There is a shallow Hill Sachs deformity, no edema, measures 11 x 2 mm. There is 10% anteroinferior glenoid deficiency. The anterior labrum is detached form the cartilage but remains attached to the periosteum, consistent with a Perthes lesion (best seen on the ABER view). This is 3 to 5 o'clock. The tear extends superiorly into the bicipitolabral anchor causing a type III slap appearance. Humeral stripping of the central portion of the IGHL. Anterior band intact. Rotator cuff intact. The ACJ is unremarkable.

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