Dermatome Screen

Question 1

C4

Answer 1

Lateral Acromium

Question 2

C5

Answer 2

Mid Deltoid

Question 3

C6

Answer 3

Radial border of forearm / thumb

Question 4

C7

Answer 4

Distal middle finger

Question 5

C8

Answer 5

Ulnar border of forearm / 5th digit

Question 6

T1

Answer 6

Medial border of arm

Question 7

L1

Answer 7

Inguinal Area

Question 8

L2

Answer 8

Anterior Mid-thigh

Question 9

L3

Answer 9

Medial Knee

Question 10

L4

Answer 10

Medial Malleolus

Question 11

L5

Answer 11

Distal medial dorsum of foot

Question 12

S1

Answer 12

Lateral border of foot

Question 13

S2

Answer 13

Medial / Posterior Calcaneus

Question 14

Lateral Acromion

Answer 14

C4

Question 15

Mid Deltoid

Answer 15

C5

Question 16

Radial Border of Forearm / Thumb

Answer 16

C6

Question 17

Distal Middle Finger

Answer 17

C7

Question 18

Ulnar border of forearm / 5th digit

Answer 18

C8

Question 19

Medial border of arm

Answer 19

T1

Question 20

Inguinal area

Answer 20

L1

Question 21

Anterior mid-thigh

Answer 21

L2

Question 22

Medial knee

Answer 22

L3

Question 23

Medial malleolus

Answer 23

L4

Question 24

Distal medial dorsum of foot

Answer 24

L5

Question 25

Lateral border of foot

Answer 25

S1

Question 26

Medial / posterior calcaneus

Answer 26

S2

Question 27

The sharp-dull test is for which tract?

Answer 27

Anterolateral System / Ventral Trigeminothalamic Tract

Question 28

The Light Touch test is for which tract?

Answer 28

Dorsal Column-Medial Lemniscal / Trigeminal Leminiscus

Question 29

Before beginning a sharp-dull test, what do you want to do first?

Answer 29

explain purpose of test to patient

Question 30

How would you describe the purpose of the sharp-dull test to a patient?

Answer 30

You have specific nerves and systems in your body that are dedicated to certain sensations such as sharp and dull. By testing these sensations on specific parts of your body, I can assess these specific nerves and systems. When I ask, I want you to tell me if the stimulus feels sharp or dull. Okay?

Question 31

After explaining the test to the patient and before starting a sharp-dull test, what should you do?

Answer 31

Show and confirm what a sharp and dull stimulus is with patient on an unaffected area.

Question 32

How is the patient positioned during a sharp-dull test?

Answer 32

Patient supine or sitting with eyes closed.

Question 33

During a sharp-dull test, do you test affected or intact area first?

Answer 33

intact area FIRST

Question 34

What sort of direction or movement should you go with a sharp-dull test?

Answer 34

Use a consistent pattern distally to proximally on a limb, but apply the stimulus randomly in a dermatome.

Question 35

How hard do you apply the sharp or dull stimulus?

Answer 35

Apply with sufficient force to deform the skin, but do not draw blood.

Question 36

What are you asking the patient when performing the the sharp-dull test?

Answer 36

Ask patient to identify Sharp vs. Dull stimulus

Question 37

After completing the exam on what side, what should you do next?

Answer 37

Compare to contralteral side or other sites (discrimination)

Question 38

The Light Tough test is for which tract?

Answer 38

Dorsal Column-Medial Leminiscal System / Trigeminal Leminiscus

Question 39

Before beginning a Light Touch test, what do you want to do first?

Answer 39

explain purpose of test to patient

Question 40

How would you describe the purpose of the Light Touch test to a patient?

Answer 40

You have specific nerves and systems in your body that are dedicated to certain sensations such as light touch. By testing this sensation on specific parts of your body, I can assess these specific nerves and systems. I want you to tell me when you feel a light touch, and then show me where I touched you. Okay?

Question 41

After explaining the test to the patient and before starting a sharp-dull test, what should you do?

Answer 41

Show and confirm what a Light Touch stimulus is with patient on an unaffected area.

Question 42

How is the patient positioned during a sharp-dull test?

Answer 42

Patient supine or sitting with eyes closed.

Question 43

During a Light Touch test, do you test affected or intact area first?

Answer 43

intact area FIRST

Question 44

How do you apply the Light Touch stimulus?

Answer 44

Use your finger tip or wisp of cotton or brush to touch (DO NOT BRUSH) the skin lightly.

Question 45

What are you asking the patient when performing the the Light Touch test?

Answer 45

Ask the patient to identify when you touch them and where you touched them.

Question 46

Match the term 1. When you touch them. 2. Where you touched them. 3. Compare to other side/sites. a. recognition b. discrimination c. localization

Answer 46

1. When you touch them. a. recognition 2. Where you touched them. c. localization 3. Compare to other side/sites. b. discrimination

Question 47

After completing the exam on what side, what should you do next?

Answer 47

compare to other side/sites (discrimination) | e.g. same, increased, or decreased.

Question 48

What would decreased light touch in multiple sites in UE and LE on one side indicate?

Answer 48

lesion of contralteral brain or brain stem

Question 49

What would decreased light touch in all extremities distally but not proximally suggest?

Answer 49

peripheral polyneuropathy