Extensor Carpi Radialis Brevis

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.