Massage & Bodywork

MAY | JUNE 2019

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FUNCTIONAL ANATOMY education The elbow joint is composed of the articulations of the distal humerus and proximal radius and ulna. The humeroulnar joint is a solid hinge joint with a deep articulation and strong ligaments directing elbow flexion and extension. The articulation between the humerus and radius allows both hinging and rotation. The rounded proximal end of the radius rotates within a corresponding notch on the ulna. While all three joints function independently, they are contained within a single joint capsule, and movement occurs at all joints simultaneously. Several large muscles of the upper arm, including the biceps brachii and brachialis, cross the elbow anteriorly. The brachioradialis and wrist extensor muscles are found on the lateral forearm, while the wrist and hand flexors cover the entire anterior surface. Another important muscle in the anterior elbow is the pronator teres, which lies deep to the bicipital aponeurosis and spans the area from the medial epicondyle of the humerus to the middle third of the lateral radius. Function The elbow is a stable joint capable of generating tremendous amounts of force in the upper extremity. The high degree of motion at the shoulder, rotational motions of the forearm (pronation and supination), and the finer motions available at the wrist and hand direct those forces and optimally position the limb. Proper Anterior Elbow and Forearm By Christy Cael 40 m a s s a g e & b o d y w o r k m a y / j u n e 2 0 1 9 Biceps brachii Brachialis Pronator teres Flexor carpi radialis Palmaris longus Flexor carpi ulnaris Flexor digitorum superficialis Flexor digitorum profundus Flexor retinaculum Palmar aponeurosis Pronator quadratus Flexor pollicis longus Extensor carpi radialis brevis Extensor carpi radialis longus Brachioradialis Brachialis

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