Arterial Anastomosis Of The Elbow

Arterial Anastomosis Of The Elbow

Question 1. Write a short note on the arterial anastomosis around the elbow joint.
Answer.

The arterial anastomosis around the elbow joint is formed between the branches of the following arteries:

• Brachial artery
• Radial artery
• Ulnar artery

Arterial anastomosis of the elbow

Question 2. Write a short note on the cubital fossa.
Answer.

The cubital fossa is a triangular hollow in front of the elbow joint.

Cubital Fossa Boundaries

• The base is formed by an imaginary horizontal line joining the medial and lateral epicondyles of the humerus.
• The medial wall is formed by the pronator teres.
• The lateral wall is formed by brachioradialis.
• The roof is formed by skin, superficial fascia, deep fascia, and bicipital aponeurosis.
• The superficial fascia contains the median cubital vein, the lateral cutaneous nerve of the forearm, and the medial cutaneous nerve of the forearm.
• The floor is formed by the brachialis muscle in the upper and medial part, and the supinator muscle in the lower and lateral part.
• Apex is a point where the pronator teres disappears underneath the brachioradialis muscle.

arterial anastomosis of elbow

Cubital Fossa Contents

From medial to lateral side:

• Median nerve
• Brachial artery
• Biceps tendon
• Superficial branch of the radial nerve
  Mnemonic: MBBS.

elbow joint anastomosis

Cubital Fossa Applied Anatomy

• The brachial artery is auscultated in the cubital fossa for recording the blood pressure.
• The median cubital vein is used in the region of the cubital fossa for venipuncture, as it lies superficial to the bicipital aponeurosis and is the most fixed vein.