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Describe the location and boundaries of cubital fossa.
Location: It is a triangular region located in front of the elbow.
- Boundaries:
- Base is formed by imaginary line joining the medial and lateral epicondyles.
- Apex is formed by the point where pronator teres meets brachioradialis.
- Medial boundary is formed by lateral border of pronator teres.
- Lateral boundary is formed by medial border of brachioradialis.
Boundaries of cubital fossa
Enumerate the structures forming roof of cubital fossa.
Structures forming roof are:
- Skin
- Superficial fascia containing
- Lateral cutaneous nerve of forearm
- Medial cutaneous nerve of forearm
- Median cubital vein
- Deep fascia
- Bicipital aponeurosis
Name muscles forming the floor of cubital fossa.
Muscles forming floor are:
- Brachialis
- Supinator
Enumerate the contents of cubital fossa.
Contents from medial to lateral are:
- Median nerve
- Brachial artery and its terminal branches – radial and ulnar arteries
- Tendon of biceps brachii
- Superficial branch of radial nerve
Applied Aspects
Median cubital vein is the vein of choice for venipuncture
Median cubital vein is the vein of choice for venipuncture because
- it is connected to deep vein by perforator vein, therefore it does not slip.
- bicipital aponeurosis in the roof of cubital fossa is deep to median cubital vein and during venipuncture protects the underlying brachial artery and median nerve.