Lecture 13 - Vessels and Nerves of the Forearm and Hand Flashcards
Define bifurcation
Splitting or dividing
Brachial artery bifurcates into what?
Radial artery and ulnar artery
Where does the bifurcation of the brachial artery occur?
Just distal to the cubital fossa
The ulnar artery passes deep to _____ and can be relocated alongside the ______ nerve deep to which muscle?
FDS: Flexor Digitorum Superficialis
ulnar nerve
FCU: Flexor Carpi Ulnaris
The ulnar artery passes _____ to the flexor retinaculum, between which bone(s)?
superficial
between pisiform and hook of hamate
The deep branch of the ulnar artery anastomoses with what?
deep palmar arch
Which artery continues as the superficial palmar arch in the hand?
Ulnar artery
Where does the radial artery travel?
Travels in a groove between anterior forearm muscles and medial border of brachio-radialis
Along which nerve can we find the radial artery?
Along the superficial branch of radial nerve
Which muscles does the radial artery pierce to become the deep palmar arch?
the first dorsal interosseous muscle and adductor pollicis
With what does the radial artery anastomose?
the deep branch of ulnar artery
Which veins follow the arterial patterns?
Deep veins
List the deep veins of the forearm and hand
- Deep venous palmar arch
- Superficial venous palmar arch
- Radial vein
- Ulnar vein
- Brachial vein
List the superficial veins of the forearm and hand
Basilic vein
Cephalic vein
The most medial structure in the cubital fossa is:
median nerve
This nerve passes deep to the flexor retinaculum, passing through the carpal tunnel
Median Nerve
The median nerve courses through the forearm between _____ and _____
FDS and FDP
Which nerve passes posterior to the medial epicondyle?
The ulnar nerve
The ulnar nerve courses through the forearm deep to what?
Flexor carpi ulnaris
What muscles does the ulnar nerve supply in the forearm?
FCU
Medial half of FDP
Prior to bifurcation, the radial nerve supplies which muscle(s)?
- Brachioradialis
- ECRL
Which muscle does the deep branch of the radial nerve pierce?
Supinator
The deep branch of the radial nerve courses through the forearm at the posterior surface of the ____
Interosseous membrane
The superficial branch of the radial nerve courses through the forearm deep to the ______ and becomes superficial at the _____
brachioradialis, anatomical snuff box
What does the superficial branch of the radial nerve supply?
supplies skin on the posterior surface of the thumb
List symptoms of the carpal tunnel syndrome
- inflammation of synovial sheaths surrounding tendons
- fluid retention
- infection
What is the carpal tunnel syndrome caused by?
caused by anything that increases the size of the tendons passing through the carpal tunnel
what is the recommended surgical procedure to treat the carpal tunnel syndrome?
the flexor retinaculum is partially or completely cut to release pressure
the median nerve supplies the skin of the lateral 3.5 digits so the following can occur:
(i) paresthesia: tingling
(ii) hypoesthesia: reduced sensation
(iii) anaesthesia: absence of sensation
(iv) reduced strength or function of thenar muscles
This nerve gives branches to most muscles in the anterior forearm:
median nerve
