Median and Ulnar Nerve Flashcards
ulnar nerve runs through what structure in the upper arm
arcade of struthers
what 2 muscles in the forearm is innervated by ulnar nerve
Flexor carpi ulnaris and flexor digitorum profundus
What 4 muscles does the median nerve innervate in the hand
Lumbricals 1 and 2
Opponens pollicis
Abductor pollicis brevis
Flexor pollicis brevis (superficial head)
Clinical presentation of ligament of struthers compression syndrome
Median nerve muscles affected, grip strength and wrist flexion weakness, benediction sign
what is affected in arcade of struthers injury
all ulnar innervated muscles
A positive froment’s sign indicates weakness in what muscle
Adductor pollicis
Median nerve runs ______ to the _______ and runs under the _______ of ________ at the _______ epicondyle of the humerus
Medial
Axillary artery
Ligament of struthers
Medial epicondyle
muscles involved in cubital tunnel syndrome
all muscles except flexor carpi ulnaris
froment’s sign
unable to adduct thumb and hold paper between thumb and forefinger indicating ulnar nerve injury
Clinical sign indicating AIN syndrome
Abnormal OK sign and difficulty forming a fist.
hypothenar muscles innervated by ulnar nerve
abductor digiti minimi, opponens digiti minimi, flexor digiti minimi
wartenberg’s sign
inability to adduct the pinky due to ulnar nerve injury
The anterior interosseous nerve branches from what nerve
Median nerve
nerve root origin of ulnar nerve
C8-T1
what nerve is spared in guyon’s canal injury
dorsal ulnar cutaneous nerve