1. The cubital fossa and cubital tunnel Flashcards Preview

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Flashcards in 1. The cubital fossa and cubital tunnel Deck (10)
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What is the cubital tunnel?

- space of dorsal medial elbow through which ulnar nerve passes to enter forearm


Which structures form the cubital tunnel?

- formed by tendinous arch joining humeral and ulnar heads of flexor carpi ulnaris


What is cubital tunnel syndrome?

compression of the ulnar nerve at the elbow


what is the cubital fossa?

area of transition between arm and forearm


what are the borders of the cubital fossa?

- superior: imaginary line connecting lateral and medial epicondyles of humerus
- lateral: medial border of brachioradialis
- medial: lateral border of pronator teres

- floor: brachialis (proximally) and supinator (distally)
- roof: skin, superficial fascia and deep fascia reinforced by bicipital aponeurosis


Describe the contents of the cubital fossa (lateral to medial).

1. radial n.
2. biceps brachii tendon
3. brachial artery and commencement of its terminal branches, the radial and ulnar arteries (usually bifurcates near apex of fossa)
4. median n.


Which structures are found in the subcutaneous tissue overlying the cubital fossa?

- median cubital vein
- medial and lateral cutaneous nerves of forearm


Which clinical intervention can be performed at the cubital fossa region?

venepuncture (median cubital vein)


Where would one palpate for the brachial pulse?

Immediately medial to biceps tendon in cubital fossa


Which complications can occur due to a supracondylar fracture when falling on flexed elbow?

1. direct damage or post-fracture swelling causing interference to blood supply of forearm from brachial artery... ischaemia... flexor muscles become fibrotic and short... incontrolled hand flexion - Volkmann's ischaemic contracture

2. damage to median or radial nerves