Kinesiology 3336A/B Lecture Notes - Lecture 12: Pneumothorax, Articular Disk, Trachea

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 3336A/B
• Professor: Dave Humphreys

Document Summary

Full of complex joints: sternoclavicular, acromioclavicular (separation, scapulothoracic, glenohumeral (dislocation) Top over distal end of clavicle and ac ++ Slight lateral pain with pull on clavicle. Short list of structures that may be damaged: acromion, clavicle. Injuries to the sternoclavicular (sc) joint are very rare: 3% incidence. Lines of defense: acromioclavicular ligaments and capsule (a-p stability, coracoclavicular ligaments (vertical stability, conoid, trapezoid. Direct: land on point of shoulder with arm adducted (most common) Grade 1: small tear of capsule of ac joint, no instability. Grade 2: tear of acromioclavicular ligament and partial coracoclavocular, slight ap spring. Grade 3: tear of ac ligament and coracoclavicular ligament, ap and vertical instability. Grade 4: tear of acromioclavicular and coracoclavicular, side view shoes its going backwards, missed often, surgical. Grade 5: tear of acromioclavicular ligament and coracoclavicular ligament, with deltotrapezial fascia stripped off, surgical. Grade 6: downward displacement of clavicle, could be damage to brachioplexus. Grade 3-step deformity (common in hockey defensemen)