HK 3100 Lecture Notes - Lecture 20: Rotator Cuff Tear, Shoulder Joint, Synovial Joint
2 Apr 2018
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Document Summary
Diagnosis and management of common clinical conditions of the upper extremity. Shoulder comprised of 3 distinct joints: glenohumeral joint (gh, acromioclavicular joint (ac, scapulothoracic joint, physiologic joint, no synovial joint, articulation between subscapularis and serratus anterior muscles, and the scapula and the thoracic cage. "concavity compression" - stability mechanism of gh joint: paralysis of it would cause the whole shoulder to lift, very shallow ball and socket so its less stable so it relies more on the rotator cuff muscles. Rotator cuff tear - supraspinatus: supraspinatus is most commonly injured/torn rc muscle, rotator cuff tendons susceptible to tears due to, hypo vascularity distal 1. 5 cm. Inflammatory buildup: move it around and it milks the tissue, history, trauma or wear/tear, often associated with repetitive overhead hand motions, athletes, trades workers, does not always reveal an acute trauma. Insidious onset (don"t remember when it started: anything that wakes you up at night is considered a pathology (usually will include a bursitis)
