The biceps tendon is markedly attenuated and subluxed medially into the superior fibres of subscapularis which themselves demonstrate marked thickening and interstitial high signal consistent with a high-grade partial -thickness tear. There is associated prominent fatty atrophy of the subscapularis muscle belly. The supraspinatus tendon is attenuated with a high-grade partial articular surface tear of the anterior half and a focal full-thickness tear through the posterior fibres measuring approximately 8 mm. Moderate fatty atrophy. The infraspinatus tendon demonstrates tendinosis of the level of the footplate.
Comment: Partial-thickness articular surface tear of the anterior fibres with a small focal full-thickness tear of the posterior fibres of supraspinatus. Moderate fatty atrophy of the supraspinatus muscle belly. Medial subluxation of a severely attenuated biceps tendon with associated high-grade partial thickness tear of subscapularis.