Anatomical regions of distal UE Flashcards
What are the borders of the cubital fossa?
The pronator teres, brachioradialis, and an imaginary line between the lateral and medial epicondyles of the humerus
What are the contents of the cubital fossa?
Median nerve, Brachial artery (as it divides into radial/ulnar arteries)
Where is the cubital tunnel located?
Medial aspect of posterior elbow
**FUNNY BONE
What are the borders of the cubital tunnel?
The top two heads of the flexor carpi ulnaris (creates “U” shape tunnel where ulnar nerve dives into the foraerm)
What are the contents of the cubital tunnel?
Ulnar nerve
What is cubital tunnel syndrome?
When the ulnar nerve becomes squished or entrapped in the cubital tunnel while descending deep to the flexor carpi ulnaris
How does cubital tunnel syndrome present? What surgery may be needed to treat this condition?
Pain/paresthesia on the ulnar side of the hand and weakness of the muscles in the hand
(can be treated by ulnar nerve decompression surgery)
What are the borders of the anatomical snuff box?
Tendons of the outcropping muscles (Extensor pollicis longus, Extensor pollicis brevis, Abductor pollicis longus)
What are the contents of the anatomical snuff box?
Radial artery and superficial branch of the radial nerve
What are the borders of the carpal tunnel?
Floor: carpal bones
Roof: flexor retinaculum
What are the structures of the carpal tunnel?
Median nerve and tendons of the long finger flexors (FDS, FDP, FPL)
What is carpal tunnel syndrome?
When the median nerve is suppressed/entrapped in the carpal tunnel
How does carpal tunnel syndrome present?
Atrophy and weakness of the thenar muscles, pain¶sthesia along the palmer side of the thumb and 1st digit (thumb)
What are the borders of Guyon’s canal?
Pisiform and hook of hamate
What are the contents of Guyon’s canal?
Ulnar nerve
