Fig. 12a–e.

PSI: spectrum of findings on MR arthrography. a Transverse fat-suppressed T1-weighted MR arthrogram and b, c corresponding coronal oblique images obtained in a tennis player with posterior shoulder pain show a posterosuperior labral tear (arrow in a) associated with an articular-sided partial tear of the posterior aspect of the supraspinatus tendon (arrowhead in b) and a SLAP type 2 lesion (arrow in c). Note large volume of anterior capsule (* in a). d, e T1-weighted MR arthrograms obtained in ABER position from two athletes with PSI: d Arthrogram demonstrates the “kissing lesion” pattern with corresponding tears of the posterosuperior labrum (white arrow) and the undersurface of the supraspinatus tendon (black arrowhead) accompanied by sclerosis of the greater tuberosity of the humeral head at the contact zone with the glenoid (black arrow). Note elongation of the IGHL (white arrowhead). e Arthrogram shows interposition of the supraspinatus tendon (*) between the greater tuberosity and the superior glenoid as well as a tear of the IGHL (arrowhead) with consecutive contrast extravasation