Extensor Carpi Radialis Brevis

• O (origin):

  • Common Extensor Origin (CEO) (lateral epicondyle of humerus)

  A) Extensor Carpi Radialis Brevis

  
• R (direction):

  • Distally (together with ECRL)

  A) Extensor Carpi Radialis Brevis

  
• I (insertion):

  • Posterior aspect of base of 3rd metacarpal

  A) Extensor Carpi Radialis Brevis

  
• A (actions):

  • Wrist extension and radial deviation

  A) Extensor Carpi Radialis Brevis

  
• NS (nerve supply):

  • Posterior interosseous branch of radial nerve (C5 - T1)

  A) Extensor Carpi Radialis Brevis