Antecubital fossa (or Cubital fossa) is the space inside the crook of the elbow. It contains the tendon of biceps brachii, the brachial artery, radial nerve, and the median nerve. It serves as a conduit for arteries that deliver blood to the forearm and upper arm, while superficial veins lie beneath its upper surface. In clinical practice, this area is commonly utilized for venipuncture procedures and for manually assessing blood pressure.
The antecubital fossa refers to the depressed area located anterior to (in front of) the elbow joint. It is the region of transition between the forearm and the anatomical arm.
The word "antecubital" refers to the triangular space anterior to the elbow. It contains the brachioradialis, brachialis, supinator muscles, and the pronator teres. These muscles are innervated by the medial and radial nerves.
The three main veins in the antecubital fossa are the median cubital vein, the basilic vein, and the cephalic vein.