Figure 8a. Subscapularis tendon in external rotation. (a) Axial proton-density–weighted MR image shows the subscapularis tendon (straight black arrows), coracoid process (curved arrow), and tendinous insertion (white arrow). (b) Transverse US image shows the subscapularis tendon (straight solid arrows), proximal muscle (curved arrows), shadowing coracoid process (open arrows), and insertion site (arrowheads).