Groove entrance lesion (GEL)

Pathology of subscapularis and long head of the biceps brachii tendons at the entrance to the bicipital groove may be a source of persistent pain

MRI:
Biceps:
Biceps at bicipital groove - partially torn, frayed, or intact
Abnormal bicpes at the entrance to bicipital groove
Subluxation or dislocation of biceps
Subscapularis:
Partially torn