Dermatomes Flashcards

1
Q

Are Dermatomes testing a Nerve Root or a Peripheral Nerve? What is it called?

A

It is testing a Nerve Root, therefore it is called RADICULOPATHY

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2
Q

What is a dermatome?

A

Segmental innervation of skin supplied by one nerve root.
Dermatomes from adjacent nerve roots often overlap and manifest as Anesthesia (lessened sensation), Paresthesia (tingling) or complete loss of sensation.

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3
Q

Instructions when testing Dermatomes

A
  1. . Say “ Sometimes I’ll touch you, sometimes I won’t. I will be using this pin wheel. This is sharp and this is dull” Test of unaffected area.
  2. Begin by closing eyes.
  3. Start touching bilaterally, starting on good side.
  4. Ask “What am I touching? Is this sharp or dull?”
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4
Q

C1

A

Vertex skull

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5
Q

C2

A

Temple
Forehead
Occiput

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6
Q

C3

A

Entire Neck
Posterior cheek
Temporal region to inferior mandible

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7
Q

C4

A

Should
Clavicle
Upper scapula

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8
Q

C5

A

Deltoid

Entire arm to base of thumb

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9
Q

C6

A

Anterior arm

Radial side of hand to thumb and index finger

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10
Q

C7

A

Lateral arm and forearm to index, long and ring finger

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11
Q

C8

A

Medial arm and forearm to long, ring and little finger

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12
Q

T1

A

Medial side of forearm to base of little finger

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13
Q

L1

A

Back
Over trochanter
Groin

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14
Q

L2

A

Back

Front of thigh to knee

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15
Q

L3

A

Upper buttock
Front of thigh to knee
Medial lower leg

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16
Q

L4

A
Inner buttock
Outer thigh
Inside of leg
Dorsum of foot
Big Toe
17
Q

L5

A

Back of side of thigh
Lateral aspect of leg
Dorsum of foot
Inner hand of sole and first, second, and third toes

18
Q

S1

A

Buttock
Back of thigh
Lower leg

19
Q

S2

A

Buttock
Back of thigh
Lower leg

20
Q

S3

A

Groin

Inner thigh to knee

21
Q

S4

A

Perineum
Genitals
Lower Sacrum