1.1.4. Dermatomes of the Lower Limb Flashcards Preview

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Flashcards in 1.1.4. Dermatomes of the Lower Limb Deck (12)
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1

What is a Dermatome?

A strip of Skin that is innervated by a single Spinal Nerve

2

1. In Clinical Practice, what can conform to Dermatomes?
2. What can cause this?

1. Areas of sensory loss
2. a) Injuries of the Spinal Cord
2. b) Injuries of the individual Nerve Root

3

What happens when there is injury to a Peripheral Nerve, containing many Nerve Roots?

Sensory loss will occur corresponding to the area of distribution of that specific Cutaneous Nerve

4

What does Nerve Root L1 Supply?

The Anterior Groin Area

5

What does Nerve Root L2 Supply?

1. The Superior part of the Thigh
2. The Lateral part of the Thigh
3. The Area of Skin just above the Buttocks

6

What does Nerve Root L3 Supply?

1. The Medial part of the Thigh
2. The Inferior part of the Thigh
3. The Anterior Knee

7

What does Nerve Root L4 Supply?

1. The Anteriomedial part of the Calf
2. The Posteromedial part of the Calf
3. The Medial part of the Ankle

8

What does Nerve Root L5 Supply?

1. The Anterolateral part of the Calf
2. The Posterolateral part of the Calf
3. The Anterior part of the Ankle
4. The Anteior part of the Foot
5. The First 3 Toes (Big Toe - Middle Toe)
6. The Distal-Medial part of the Sole of the Foot

9

What does Nerve Root S1 Supply?

1. The Lateral part of the Ankle
2. The Last 2 Toes (4th Toe and Little Toe)
3. The Lateral part of the Foot
4. The Majority of the Sole of the Foot

10

What does Nerve Root S2 Supply?

1. The Posterior part of the Ankle
2. The Posterior part of the Calf
3. The Posterior part of the Knee
4. The Posterior part of the Thigh

11

What does Nerve Root S3 Supply?

1. The Genital Region
2. The Buttock Region

12

What does Nerve Root S4, S5 and Ccx1 Supply?

The Peri-Anal Area