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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).


  • Lateral epicondyle of the humerus


  • Base of the third metacarpal (back of wrist)


  • Extension of the wrist
  • Abduction of the wrist
  • Weak extension of the elbow



  • 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.