Figure 10a. Arthroscopically proved rotator interval defect after acute injury to shoulder. (a, b) Sagittal, (c) coronal oblique, and (d) transverse T1-weighted MR arthrographic images (700/10) obtained with fat saturation after intraarticular administration of dilute gadolinium compound show contrast agent extravasating (arrow) through large defect in the rotator interval anterior to supraspinatus musculotendinous junction (*).