Fig. 2From: MR-arthrography and CT-arthrography in sports-related glenolabral injuries: a matched descriptive illustration a, b Patient positioning. Patient is placed supine, head first, arm along the body, and the arm in external rotation for both fluoroscopy guided injection (a), and subsequent MR examination (b). c, d Drawbacks of the anteroinferomedial approach in shoulder CT arthrography and MR arthrography. Axial (c) fat-suppressed T1- and (d) correspondent CT - arthrography image show distortion of the subscapularis muscle with peri- (straight arrows) and intra-muscular (dashed arrow) contrast media extravasation caused by the needle traversing the subscapularis muscle. In addition, it is unclear whether intralabral contrast is also related to needle misplacement or actual tear (curved arrow). This can add difficulty to the interpretation. An anterior-rotator interval approach would have been optimal in this caseBack to article page