Kinesiology 2236A/B Lecture Notes - Lecture 20: Electrical Muscle Stimulation, Impingement Syndrome, Bicipital Groove
17 Jan 2017
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4 major joints - glenohumeral, acromioclavicular, sternoclavicular and scapulothoracic. 4 major rotator cuff stabilizers of the shoulder - subsapularis, supraspinatus, infraspinatus, teres minor. Baseball, swimming and gymnastics are sports that increase risk for shoulder overuse injuries. Any sport that repetitively uses an overhead movement will cause microtrauma in the shoulder muscles. Soft tissue stabilizers feel the most stress during the throwing motion; making them the most frequently injured structures of the shoulder. In baseball, there are 3 phases: cocking, acceleration, and deceleration. Since pitchers are constantly throwing and doing a repetitive motion, it makes them susceptible. Swimmer"s shoulder - common painful syndrome caused by repeated shoulder impingement. There are 3 strokes - freestroke, backstroke and butter y; as you increase distance swung, you increase your risk of getting an injury i. e. complete 13-18 strokes leading to 3,000-4,000 rotations in one practice. Mid-distance & distance runners are at most risk for shoulder injury. There are two main shoulder injuries in gymnastics:
