myotomes, dermatomes, DTR

C5 myotome

shoulder abduction

C5 DTR

biceps refelx

C5 dermatome

anterior posterior lateral upper arm from shoulder to elbow

C 6 myotome

wrist extension

C 6 DTR

brachioradialis

C6 dermatome

antero and postero lateral forearm and fingers 1 and 2

C7 myotome

wrist flexion

C7 DTR

tricep

C7 dermatome

middle finger

C8 myotome

finger flexion

C8 DTR

none

C8 dermatome

anterior and postero medial forearm and fingers 4 and 5

T1 myotome

finger abduction and adduction

T1DTR

none

T1 dermatome

anterior and poster medial upper arm

L 1 and L2 myotome

hip flexion

L1 and L 2 DTR

none

L1 and L2 dermatome

anterior asepct of upper thigh
anterior asepct of mid thigh

L 3 myotome

knee extension

L 3 DTR

none

L 3 dermatome

anterior aspect of lower thigh to knee

L 4 myotome

ankle DF and foot inversion

L 4 DTR

patellar

L 4 dermatome

medial aspect of lower leg to big toe
4 to the floor

L 5 myotome

DF of big toe

L5 DTR

none

L 5 dermatome

lateral aspect of lower leg and dorsum of foot

S 1 myotome

PF and foot eversion

S 1 DTR

achilles

S 1 dermatome

lateral malleolus and lateral foot