vessels

Question 1

A 67- year- old patient is admitted for surgery after his tibia was fractured in an car accident. 12 hours after the operation the patient complains of severe pain and tingling sensations. On examination, the anterior leg looks red, swollen and feels cooler than the rest of the limb. Dorsiflexion of the foot is impaired and so is sensation over the first and second toes. The intracompartmental pressure of his anterior compartment is 40mmHg. The pulse palpated just lateral to the extensor hallucis longus tendon is weak. The pulse of which artery is felt at this anatomical site?

Answer 1

dorsalis pedis artery

The dorsalis pedis artery is a continuation of the anterior tibial artery that runs on the dorsal surface of the foot. As the intracompartmental pressure of the anterior leg compartment is increased, it should compress the anterior tibial allowing only some of the blood to the dorsalis pedis. This explains its weakened pulse, which is always felt lateral to the tendon of extensor hallucis longus tendon. Together with the posterior tibial artery pulse, they are the most common pedal pulses felt.

Question 2

what branch of the radial artery is involved in the retrograde blood supply of the scaphoid

Answer 2

As 80% of the scaphoid receives retrograde supply of blood via the dorsal carpal artery (branch of radial artery

Question 3

how can the brachial artery be fractured and what will it present as

Answer 3

At risk of injury with a supracondylar fracture of the humerus, increases the risk of volkmaan’s ischemic contractures

Question 4

A boy presents with arm problems after falling from a tree, during which he caught a branch to save himself. On examination he has a claw hand with a hyperextended wrist

Answer 4

klumkes palsy

Question 5

what vessels lie adjacent to the pisiform bone

Answer 5

The ulnar nerve and artery lie adjacent to the pisiform bone

Question 6

ACL receives blood from what artery

Answer 6

Anterior cruciate ligament receives blood supply from the middle genicular artery

Question 7

what vessel is found in the anatomical snuffbox

Answer 7

radial artery

Question 8

which artery is branch of third part of the axillary artery

Answer 8

posterior circumflex humeral

sub scapular first then anterior circumflex humeral