nerve root derm/myotomes and reflexes Flashcards
1
Q
C3 derm
A
lateral neck `
2
Q
C4 derm
A
over clavicle
3
Q
C5 derm
A
lateral upper arm (delt)
4
Q
C6 derm
A
thumb
5
Q
C7 derm
A
middle finger
6
Q
C8 derm
A
medial hand/pinky
7
Q
T1 derm
A
medial forearm
8
Q
T2 derm
A
medial upper arm by armpit
9
Q
L1 derm
A
anterior groin
10
Q
L2 derm
A
middle-upper ant thigh
11
Q
L3 derm
A
mid to lower med. thigh
12
Q
L4 derm
A
med. aspect foot to great toe
13
Q
L5 derm
A
central dorsum foot to middle toe
14
Q
S1 derm
A
lateral aspect foot and ankle
15
Q
S2 derm
A
middle of posterior thigh
16
Q
C3 myo
A
cervical lateral flex
17
Q
C4 myo
A
shoulder shrug
18
Q
C5 myo
A
shoulder abduction
19
Q
C6 myo
A
elbow flexion
20
Q
C7 myo
A
elbow extension
21
Q
C8 myo
A
thumb extension
22
Q
T1 myo
A
finger ab and adduction
23
Q
T2/ L1 myo
A
there is none :)
24
Q
L2 myo
A
hip flexion
25
L3 myo
knee extension
26
L4 myo
ankle dorsiflexion
27
L5 myo
great toe extension
28
S1 myo
hip extension
29
S2 myo
knee flexion
30
Biceps DTR
C5 (contribution from C6)
31
Brachioradialis DTR
C6 (contribution C5)
32
Triceps DTR
C7 (contribution C6)
33
Patellar DTR
L4 (contribution L2, L3)
34
Achilles DTR
S1 (contribution S2)
(can also be done prone)
35
what are the reflex grading scale numbers
0, 1+, 2+, 3+ and 4+
36
what does a DTR score 0 mean/indicate
0 means theres no reflex present, and can indicate a nerve root issue (disc herniation, muscle compression or bone impingement)
37
what does DTR score 4+ mean/indicate
4+ means extremely brisk with clonus present, which indicates an upper motor neuron issue (CNS) (CVA, TBI, ALS, MS)
38
what does a positive babinski reflex look like
splaying of toes upon brush under lateral to distal to medial foot
39
what does positive hoffman reflex look like
1st and 2nd digit approximation upon flick or tap of middle finger nail
