Buford complex at 2 o’clock
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A Buford complex is a deformity of the glenoid labrum (rim of shoulder socket cartilage), a missing section in the 1-3 o’clock 🕑 position, plus a thickened, cord-like glenohumeral ligament. About 3% of individuals have this! Not exactly rare.
Naturally, it can get mistaken for a rip. Radiopaedia.org:
“There are a number of glenoid labral variants, whose importance is mainly due to the fact that the unwary may misinterpret them as pathology.”
There is a lot of variety in anatomy, and a huge gray zone between “just quirky” and “well there’s your problem!”