Cubital fossa

Question 1

Medial border of cubital fossa

Answer 1

Lateral border of pronator teres

Question 2

Lateral border of cubital fossa

Answer 2

Medial border of brachioradialis

Question 3

Floor of cubital fossa

Answer 3

Proximally by brachialis

Distally by supinator

Question 4

Roof of cubital fossa

Answer 4

Skin and fascia
Reinforced by bicipital aponeurosis
Median cubital vein

Question 5

Contents of cubital fossa

Answer 5

Lateral to medial:

Radial nerve,
Biceps tendon,
Brachial artery,
Median nerve

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Question 6

Superior border of cubital fossa

Answer 6

Imaginary line between epicondyles of humerus

Question 7

Clinical relevance of cubital fossa

Answer 7

Venipuncture (median cubital vein),
Measuring blood pressure (korotkoff sounds of brachial pulse),
Supracondylar fractures

Question 8

What 2 veins are connected by the median cubital vein

Answer 8

Basilic

Cephalic

Question 9

What’s a Supracondylar fracture and how does it commonly occur

Answer 9

Transverse fracture spanning between 2 epicondyles

Falling on a flexed elbow

Question 10

Clinical relevance of Supracondylar fracture

Answer 10

Displaced fracture fragments (or post fracture swelling) can damage contents of cubital fossa

This can be:

• damage to median or radial nerves
• Loss of blood supply to forearm by brachial artery resulting in volkmann’s ischaemic contracture (uncontrolled flexion of hand as flexor muscles become fibrotic and short)