HTHSCI 1H06 Lecture Notes - Lecture 18: Extensor Carpi Ulnaris Muscle, Extensor Digitorum Muscle, Pronator Teres Muscle

• School: McMaster University
• Department: Health Sciences
• Course: HTHSCI 1H06
• Professor: Peter Helli

Document Summary

Separation: dislocation of acromioclavicular joint, rupture of acromioclavicular ligament. Inferior to supraspinatus: teres minor (axillary n. , underneath infraspinatus tendon. Subscapularis: anterior, weak point in rotator cuff, teres minor and subscapularis, which muscle initiates abduction of the arm? (first 20 degrees) Forearm flexors biceps musculocutaneous nerve: deltoid, biceps attached to coracoid plexus and glenoid fossa, musculocutaneous nerve. Forearm extensors triceps radial nerve: deltoid, triceps, radial nerve, antagonizes flexion (triceps, radial nerve injury, results in wrist drop. Flexors superficial (medial epicondyle: pronator teres. Flexor carpi radialis: plamaris longus (pulmar apeneurosis) you may or may not have it. Flexor digitorum, superficialis and profundus: arise from interoseous membrane (ulna radius, extensors superficial (lateral epicondyle, extensor carpi ulnaris, extensor digitorum, extensor carpi radialis, extensors deep, extensor / abductor pollicis. Supination - synergistic flexor & extensor compartment muscle action: epi(cid:272)o(cid:374)dylitis (cid:894)golfer"s (cid:448)ersus te(cid:374)(cid:374)is el(cid:271)o(cid:449)(cid:895, golfer"s el(cid:271)o(cid:449, medial epicondyle affected, tennis elbow. Lateral epicondyle affected: hand, colles" fracture (describe)