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South College MSK 3 > Week 1- Cervical Biomechanics > Flashcards

Week 1- Cervical Biomechanics Flashcards

1
Q

Occipital-Atlanto joint

A

C0-C1

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2
Q

Atlanto-axial joint

A

C1-C2

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3
Q

Lower cervical region

A

C2-C7

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4
Q

What function does the high mobility of the cervical spine serve?

A

Finely position head for vision, hearing, smell, and equilibrium

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5
Q

What is the normal lordosis for the cervical spine?

A

~30-35 degrees extension

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6
Q

Cervical ROM Flexion

A
  • Combined: 40-50
  • OA: 5
  • AA: 5
  • Lower Cervical: 35-40
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7
Q

Cervical ROM Extension

A
  • Combined: 70-80
  • OA: 10
  • AA: 10
  • Lower Cervical: 55-60
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8
Q

Cervical ROM Rotation

A
  • Combined: 65-75
  • OA: 0
  • AA: 35-40
  • Lower Cervical: 30-35
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9
Q

Cervical ROM Sidebend

A
  • Combined: 35-40
  • OA: 5
  • AA: 0
  • Lower Cervical: 30-35
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10
Q

Type 1 mechanics

A
  • Rotation and sidebend occur in opposite directions

- Upper cervical spine

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11
Q

Type 2 mechanics

A
  • Rotation and sidebend occur to the same side

- Lower cervical spine

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12
Q

Type 3 mechanics

A

Motion in 1 plane reduces motion in all remaining planes

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13
Q

Joint surfaces of the atlanto-occipital joint

A
  • Occiput: convex condyles

- Atlas: concave articular facets

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14
Q

Arthrokinematics of the atlanto-occipital joint (flexion)

A

Occipital condyles roll anterior/glide posterior

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15
Q

Arthrokinematics of the atlanto-occipital joint (extension)

A

Occipital condyles roll posterior/glide anterior

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16
Q

Primary movement of the atlanto-occipital joint

A

Nodding

17
Q

What limits movement of the atlanto-occipital joint?

A
  • Articular capsules
  • O-A membranes
  • Ligaments
18
Q

Primary movement of the atlanto-axial joint

A

Shaking head no

19
Q

What limits movement of the atlanto-axial joint?

A
  • Alar ligaments
  • Apophyseal joint tension
  • Muscles
20
Q

How does full rotation affect the vertebral arteries?

A

Stretching the contralateral artery (rotate right –> stretch left)

21
Q

Function of alar ligament

A

Stabilizes occiput-atlas w/ rotation

22
Q

Function of transverse ligament

A

Prevents anterior migration of C1 on C2

23
Q

What is Lhermitte’s sign?

A

Describes an electric shock-like sensation that occurs on flexion of the neck

South College MSK 3 (22 decks)

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