Brachioradialis

• Brachioradialis:

  • Superficial and lateral forearm muscle
  • Upper part is deep to brachialis
  • Forms lateral border of the cubital fossa

  
• O (origin):

  • Upper 2/3 of the front of the lateral supracondylar ridge
  • adjacent lateral intermuscular septum

  A) Brachioradialis

  
• R (direction):

  • Downwards to form a long narrow tendon mid forearm

  A) Brachioradialis

  
• I (insertions):

  • Lateral surface of radius just proximal to the styloid process

  A) Brachioradialis

  
• A (actions):

  • Flexor (especially in mid position)
  • Returns forearm to the mid position from extremes of pronation and supination

  A) Brachioradialis

  
• NS (nerve supply):

  • Radial nerve (C5 - T1)

  A) Brachioradialis