Upper Cervical Spine Flashcards
What vertebrae are the smallest and most mobile?
cervical vertebrae
What passes through the transverse foramina of the cervical spine?
vertebral artery
What vertebrae holds the neck/head up?
C1 - Atlas
What are the atypical vertebrae of the cervical spine?
C1 - atlas
C2 - axis
C7
What are the typical vertebrae of the cervical spine?
C3-C6
- have near identical features
Primary function of the atlas (C1)?
holds up the head
What 4 features does the Atlas (C1) NOT have?
1) Body
2) Pedicle
3) Lamina
4) Spinous process
Arthrokinematics of AO joint?
convex (occipital) moving on concave (C1)
The superior articular facet of the atlas (C1) articulates with what?
superior articular facet of C1 (concave) articulates with the occipital condyles of the skull (convex)
The inferior articular facets of the atlas articulate with what?
the superior facets of C2 (axis)
What cervical vertebrae has the largest transverse process in the cervical region?
atlas (C1)
What is the key attachment point for several small neck muscles to control fine movements?
transverse process of the atlas (C1)
What muscles attach to the transverse process of the atlas (C1) and where do they go?
a) rectus capitis anterior - occipital bone
b) rectus capitis lateralis - occipital bone
c) obliquus capitis superior - occipital bone
d) obliquus capitis inferior - spinous process of axis (C2)
e) splenius cervicis - spinous processes of T02-T05
f) levator scapulae - superior part of medial border of the scapula
g) intertransversarius posterior cervicis - transverse process of the axis (posterior tubercule)
h) intertransversarius anterior cervicis - transverse process of the axis (anterior turbercle)
The superior articular facets of the axis (C2) are convex or concave?
slightly convex
The superior articular facets of the axis (C2) are oriented how much (in degrees) from the horizontal plate?
20 degrees
The superior articular facets of the axis (C2) articulate with what?
inferior facets of the atlas (C1)
What is the primary movement of the AO joint?
flexion/extension (nodding)
How much ROM do you get at the AO joint for each:
a) flexion
b) extension
c) axial rotation
d) lateral flexion
a) +/- 5 degrees
b) +/- 10
c) 0-5
d) +/- 5