4.3. Anatomical Snuffbox Flashcards

1
Q

What is the Anatomical Snuffbox also known as?

A

Radial Fossa

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2
Q

What is the Anatomical Snuffbox?

A

A Triangular Depression on the Lateral Aspect of the Dorsum of the Hand

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3
Q

At what level of the Hand is the Anatomical Snuffbox located?

A

The Level of the Carpal Bones

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4
Q

When is the Anatomical Snuffbox best seen?

A

When the Thumb is Extended

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5
Q

Why is this called the Anatomical Snuffbox?

A

It was used to hold snuff (ground tobacco) before inhaling in the nose

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6
Q

How many Borders does the Anatomical Snuffbox have?

A
  1. 3 x Walls
  2. 1 x Floor
  3. 1 x Roof
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7
Q

What are the 3 Walls of the Anatomical Snuffbox?

A
  1. Proximal Border
  2. Ulnar (Medial) Border
  3. Radial (Lateral) Border
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8
Q

What forms the Proximal Border of the Anatomical Snuffbox?

A

Styloid Process of the Radius

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9
Q

What forms the Ulnar (Medial) Border of the Anatomical Snuffbox?

A

Tendon of the Extensor Pollicis Longus

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10
Q

What forms the Radial (Lateral) Border of the Anatomical Snuffbox?

A
  1. Tendon of the Abductor Pollicis Longus

2. Tendon of the Extensor Pollicis Brevis

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11
Q

What forms the Floor of the Anatomical Snuffbox?

A
  1. Scaphoid

2. Trapezium

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12
Q

What forms the Roof of the Anatomical Snuffbox?

A

Skin

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13
Q

What are the main contents of the Anatomical Snuffbox?

A
  1. Radial Artery
  2. Terminal Branches of the Superficial Branch of the Radial Nerve
  3. Cephalic Vein
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14
Q
  1. Where is the Radial Artery located in the Anatomical Snuffbox?
  2. How does the Radial Artery do this?
A
  1. It Crosses the Floor

2. Obliquely

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15
Q

Where does the Radial Artery run in relation to the Extensor Tendons?

A

Deep

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16
Q

Can the Radial Pulse be palpated in the Anatomical Snuffbox?

A

Yes, in some patients.

17
Q

Where are the Terminal Branches of the Superficial Branch of the Radial Nerve located?

A

Subcutaneously, Across the Roof

18
Q

What do the Terminal Branches of the Superficial Branch of the Radial Nerve provide sensory innervation for?

A

Lateral 3 1/2 Digits of the Dorsum of the Hand and it’s associated Palmar Area

19
Q

Where is the Cephalic Vein located in the Anatomical Snuffbox?

A

Subcutaneously, Across the Floor

20
Q

Where does the Cephalic Vein arise from?

A

The Dorsal Venous Network of the Hand