The extensor carpi radialis brevis is important in racket sports and golf which require strong wrist extension (movements where the wrist bends backwards).
Origin - Lateral epicondyle of the humerus.
Insertion - Base of the third metacarpal (back of wrist).
Actions - Extension of the wrist
Abduction of the wrist
Weak extension of the elbow.
Innervation - Radial nerve (c6 and c7).
Daily uses - Gripping things.
Example Strengthening Exercises - Tennis elbow wrist flexion exercises.
Example Stretches - Tennis elbow stretch - the elbow is straightened, forearm pronated or rotated inwards and the palm hand pulled downwards.