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Flashcards in Spinal Joints Deck (59)
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1

What joint class is the atlanto-occipital joint?

Condylar

2

What bones are involved at the atlanto-occipital joint?

Condyles of the occiputSuperior articular facet of C1

3

What is the range of motion at the atlanto-occipital joint?

Flexion, extension, minor lateral bend and rotation

4

What acts on flexion of the atlanto-occipital joint?

Longus capitis and rectus anterior

5

What muscles act in extension of the atlanto-occipital joint?

SCM, semispinalis, splenius

6

What acts in lateral bending of the atlanto-occipital joint?

Rectus lateralis, SCM, trapezius

7

What innervates the atlanto-occipital joint?

C1

8

What class of joint is the median atlanto-dental joint?

Pivot/trochoid

9

What bones are involved at the median atlanto-dental joint?

Anterior arch of C1 and Dens of C2

10

What type of motion(s) occur at the median atlanto-dental joint?

Rotation

11

What muscles act in rotation of the median atlanto-dental joint?

SCM, semispinalis capitis against rectus capitis posterior major, obliquus capitis superior and inferior

12

What is the innervation of the median atlanto-dental joint?

C2

13

What is joint classification of the lateral atlanto-axial joint?

Planar

14

What bones are involved in the lateral atlanto-axial joint?

Lateral masses of C1 and the superior articular facets of C2

15

What motions are possible at the lateral atlanto-axial joint?

Rotation and flexion/extension

16

What muscles act in rotation of the lateral atlanto-axial joint?

SCM, SS capitis against rectus capitis posterior major, obliquus capitis superior and inferior

17

What is the innervation of the lateral atlanto-axial joint?

C2

18

What joint classification is the zygapophyseal joint?

Planar

19

What bones are involved in the zygapophyseal joint?

Inferior articular facet of the superior vertebraSuperior articular facet of the inferior vertebra

20

What is the orientation of the superior facets?

Cervicals - posterior, superior, medialThoracic - Posterior, superior, lateralLumbar - Posterior, medialL5 - Posterior

21

What is the facet orientation in the coronal plane for each region?

C - 0 degreesT - 15 degreesL 90 degrees

22

What is the facet orientation in the sagittal plane for each region?

C - 90 degreesT - 75 degrees L - 0 degrees

23

What is the facet orientation in the horizontal plane for each region?

C - 45 degreesT - 60 degreesL - 90 degrees

24

What are the primary motions of the zygapophyseal joint?

C - flexion, extension, and rotationT - flexionL - rotation

25

What muscles act on the zygapophyseal joint?

Paraspinal muscles

26

What is the innervation of the zygapophyseal joint?

medial branches of the dorsal rami

27

What is the joint classification of the sacroiliac joint?

Interlocking planar

28

What bones are involved in the sacroiliac joint?

Auricular surface of sacrumArticular surface of ilium

29

What motion is achieved at the SI joint?

Nutation and counternutation

30

What muscles act on the Si joint?

Mainly erector spinae and psoas major