The cubital fossa

Question 1

Where is the cubital fossa located?

Answer 1

The transition between the anatomical arm and forearm. Located in the anterior depression of the elbow joint

Question 2

What are the four borders of the cubital fossa

Answer 2

Lateral border- medial border of the brachioradialis muscle.
Medial border lateral border of pronator teres.
Superior border- hypothetical line between epicondyles of the humerus.
Cubital fossa floor- formed proximally by brachialis and distally by the supinator muscle

Question 3

What anagram is used to remember the contents of the cubital fossa?

Answer 3

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a e i e r r e e
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a e p o h r a e
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lists the contents from lateral to medial

Question 4

How can you identify each structure

Answer 4

Radian nerve- passes underneath brachioradialis muscle
Bicep tendon- runs through cubital fossa attatching to radial tuberosity
brachial artery- divides into radius and ulnar arteries at apex
Median nerve- leaves the cubital fossa between two heads of pronator teres.

Question 5

List three reasons why the cubital fossa is clinically relevant

Answer 5

Brachial pulse/blood pressure
Venepuncture
Supracondylar fracture- common in young children due to hyperextension of elbow. May lead to volkmans ischeamic contractures if not treated quickly enough