Antecubital Fossa

Describe the anatomy relevant to central venous access (including femoral, internal jugular, external jugular, subclavian and peripheral veins)

The antecubital fossa is a triangular space on the anterior aspect of the forearm.


The triangular borders are formed:

  • Medially by pronator teres
  • Laterally by brachioradialis
  • Superiorly by an imaginary line between the medial and lateral epicondyles

  • The roof of the fossa is formed by subcutaneous tissue

  • The floor is formed by brachialis and supinator


From medial to lateral:

  • Median nerve
  • Brachial artery
  • Biceps tendon and aponeurosis
  • Radial and posterior interosseous nerves
  • Veins
    • Basilic vein
    • Cephalic vein
    • Venous variations:
      • A median cubital vein connecting the basilic and cephalic veins
      • A median vein of the forearm, which divides into a median basilic and median cephalic vein which drain into the basilic and cubital veins


  1. FRCA - The Cubital Fossa
Last updated 2019-07-18

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