dermatomes test

Question 1

C2

Answer 1

At least 1 cm lateral to the occipital protuberance (alternatively 3 cm behind the ear)

Question 2

C3

Answer 2

Supraclavicular fossa (posterior to the clavicle) and at the midclavicular line

Question 3

C4

Answer 3

Over the acromioclavicular joint

Question 4

C5

Answer 4

Lateral (radial) side of the antecubital fossa

just proximal to elbow crease

Question 5

C6

Answer 5

Thumb, dorsal surface, proximal phalanx

Question 6

C7

Answer 6

Middle finger, dorsal surface, proximal phalanx

Question 7

C8

Answer 7

Little finger, dorsal surface, proximal phalanx

Question 8

T1

Answer 8

Medial (ulnar) side of the antecubital fossa,

just proximal to medial epicondyle of the humerus

Question 9

T2

Answer 9

APEX OF AXILLA

Question 10

T4

Answer 10

nipple line at the midclavicular line

Question 11

T6

Answer 11

xiphisternum midclavicular line

Question 12

T10

Answer 12

umbilicus midclavicular line

Question 13

T12

Answer 13

mid-point of the inguinal ligament

Question 14

L1

Answer 14

Midway distance between the key sensory points for Tl2 and L2

Question 15

L2

Answer 15

On the anterior-medial thigh at the midpoint drawn connecting the midpoint of inguinal ligament (T12) and the medial femoral condyle

Question 16

L3

Answer 16

Medial femoral condyle above the knee

Question 17

L4

Answer 17

Medial malleolus

Question 18

L5

Answer 18

Dorsum of foot at 3rd metatarsophalangeal joint

Question 19

S1

Answer 19

Lateral heel

Question 20

S2

Answer 20

Midpoint of the popliteal fossa

Question 21

S3

Answer 21

Ischial tuberosity or infragluteal fold

Question 22

S4-5

Answer 22

Perianal area (taken as one level)