Arm and Forearm Muscles

ARM AND FOREARM MUSCLES ES 332 ? APPLIED ANATOMY Kari Kebach, ATC, MS OUTLINE Introduction Muscles of the arm Muscles of the forearm Video dissection ARM MUSCLES Anterior Biceps brachii Brachialis Brachioradialis Posterior Triceps brachii Anconeus FOREARM MUSCLES Anterior Flexors/ pronators Common origin = medial humeral epicondyle 4 superficial, Pronator teres, Flexor carpi radialis, Palmaris longus, Flexor carpi ulnaris 1 Intermediate, Flexor digitorum superficialis 3 deep Flexor digitorum profundus, Flexor pollicis longus, Pronator quadratus FOREARM MUSCLES Posterior Extensors/ supinators Common origin = lateral humeral epicondyle 5 superficial, Extensor carpi radialis longus, extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris 5 deep Supinator, abductor pollicis longus, extensor pollicis brevis, extensor pollicis longus, extensor indicis FOREARM MUSCLES ? OVERUSE INJURY Lateral epicondylitis Tennis elbow Degeneration of tendons attaching to LE i.e. wrist extensors Affects up to 50% racquet sport players May be work related ? overuse of forearm muscles E.g. plumbing, painting, raking, meat cutting VIDEO TIME?.. http://brunelleschi.imss.fi.it SUMMARY Muscles of the arm 3 Anterior 2 Posterior Muscles of the forearm Anterior 4 Superficial 1 Intermediate 3 Deep Posterior 5 Superficial 5 Deep NEXT CLASS Lower extremity bones and joints Pelvis and hip