Neuroanatomy of Limbs

Question 1

Erb Duchenne Palsy

Answer 1

upper plexus lesion C5, C6

Question 2

Klumpke paralysis producing claw lesion

Answer 2

lower plexus C8, T1

Question 3

what structural abnormality can cause thoracic outlet syndrome

Answer 3

cervical rib (extra rib from C7)

Question 4

thoracic outlet syndrome symptoms

Answer 4

hand weakness
unilateral Raynauds
pallor of limb on elevation
loss of radial pulse on abduction and external shoulder rotation

Question 5

what 2 things can cause Parsonage Turner syndrome

Answer 5

viral infection
strenuous exercise

Parsonage Turner syndrome is sudden pain followed by severe weakness

Question 6

what are the symptoms of Parsonage Turner syndrome

Answer 6

Guillain Barre like symptoms
proximal muscle weakness
muscle wasting

Question 7

radiation plexopathy syndrome is associated with

Answer 7

axillary nodes exposed to high dose radiotherapy for breast, neck, or other ENT related cancers

Question 8

what is the presentation of radiation plexopathy syndrome

Answer 8

initial paresthesia in hand progressing to involve all lower plexus structures

Question 9

musculocutaneous nerve palsy presentation

Answer 9

weakness in flexion and supination of forearm

Question 10

axillary nerve palsy presentation

Answer 10

flat shoulder deformity

Question 11

radial nerve palsy presentation

Answer 11

wrist drop

Question 12

median nerve palsy presentation (3)

Answer 12

hand of Benediction
ape hand
carpal tunnel

Question 13

hand of Benediction is evident when

Answer 13

trying to make a fist- unable to flex ring and pinky

Question 14

ulnar nerve palsy presentation

Answer 14

ulnar claw- can’t straighten ring finger or pinky

Question 15

upper plexus lesions of L1-L4 are often due to

Answer 15

compression from abdominal mass such as an abdominal aneurysm

Question 16

lower plexus lesions of L5-S3 are often due to

Answer 16

following surgery

Question 17

weakness of hamstrings is due to what nerve

Answer 17

sciatic

Question 18

femoral nerve palsy presentation

Answer 18

loss of knee jerk reflex

Question 19

common peroneal nerve (common fibular nerve) palsy presentation

Answer 19

foot drop

Question 20

obturator nerve palsy presentation

Answer 20

adductor reflex

Question 21

sciatic nerve palsy presentation (3)

Answer 21

loss of knee flexion
sensory loss of outer leg
loss of ankle reflex

Question 22

posterior tibial nerve palsy presentation

Answer 22

inability to stand on toes
sensory loss of sole of foot
loss of ankle reflex

Question 23

C5 radiation radiates to __
C6 radiation radiates to __
C7 radiation radiates to __
C8 radiation radiates to __

Answer 23

C5 upper arm
C6 thumb
C7 middle finger
C8 pinky

Question 24

anterior sciatica syndrome causes pain radiating along ___

Answer 24

anterior thigh and leg

Question 25

anterior sciatica syndrome is due to what spinal level radiculopathy

Answer 25

L3 or L4

Question 26

posterior sciatica syndrome causes pain radiating along __

Answer 26

posterior thigh and leg

Question 27

posterior sciatica syndrome is due to what spinal level radiculopathy

Answer 27

S1 or L5

Question 28

L3 radiation radiates to __ L4 radiation radiates to __ L5 radiation radiates to __ S1 radiation radiates to __

Answer 28

L3 to knee L4 to shin L5 to big toe S1 to little toe

Question 29

lumbar disc prolapse symptoms

Answer 29

bilateral pain and paresthesia

Question 30

piriformis syndrome occurs due to compression of what nerve

Answer 30

sciatic