is the supraspinatus tendon part of the rotator cuff
Rotator cuff tear The tendons of the rotator cuff, not the muscles, are most commonly involved, and of the four, the supraspinatus is most frequently affected, as it passes below the acromion. The role of the supraspinatus is to resist downward motion. The supraspinatus resists downward motion while the shoulder is relaxed as well as when carrying weight.[3] Such a tear usually occurs at its point of insertion onto the humeral head at the greater tubercle.[4] Even though the supraspinatus is the most commonly injured muscle of the four muscles in the rotator cuff, the other three muscles that comprise the rotator cuff, the infraspinatus, teres minor, and subscapularis, may also be injured.[3]
Distal radioulnar articulation The function of the radioulnar joint is to lift and maneuver weight load from the distal radioulnar joint to be distributed across the forearmâ€™s radius and ulna as a load-bearing joint.[1] Supination of the radioulnar joint can move from 0 degrees neutral to approximately 80-90 degrees where Pronation of the Radioulnar Joint can move from 0 degrees neutral to approximately 70-90 degrees.[2] Supination (palms facing up) vs. pronation (palms facing down). Muscles that contribute to function are all supinator (Biceps Brachii, Brachioradialis, and Supinator) and pronator muscles (Brachioradialis, Pronator Quadratus, and Pronator Teres).