Kinesiology 2236A/B Lecture Notes - Lecture 28: Brachial Plexus, Trapezius Muscle, Subclavian Vein

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2236A/B
• Professor: Dave Humphreys

Document Summary

Shoulder injuries in sport: won"t be tested on these numbers. More shoulder injuries than in contact sports. Upper extremity: upper extremity articulation with the thorax (shoulder) and full of complex joints: sternoclavicular, acromioclavicular, scapulothoracic, glenohumeral. Many people have shoulder problems (tendinitis/dislocations, broken collar bone) Upper extremity injuries: fracture: clavicle or humerus/scapular (less frequent) Separations: 2 joints usually an acromioclavicular, sometimes sternoclavicular. Dislocations: glenohumeral or sternoclavicular joint tendonitis/osis common: usually condition where arm comes over horizontal position supraspinatus rotator cuff muscles. The shoulder girdle: connects the upper limb to the axial skeleton on each side contains 2 bones: clavicle and scapula clavicle attaches medially to the sternal manubrium laterally to the acromion process of the scapula. Sternoclavicular movement: as arm moves through flexion and/or abduction, clavicle retracts, elevates and rotates posteriorly. Mva (motor vehicle accidents) and sports injuries most common causes of injury. Can be: direct- blow to clavicle indirect- through arm or shoulder usually clavicle upward or forward.