Upper Cervical Flashcards Preview

Biomechanics II > Upper Cervical > Flashcards

Flashcards in Upper Cervical Deck (44)
Loading flashcards...
1

What are the effects of a hyperlordotic curve

posterior disc compression
tensile stress anteriorly to the disc and myofascial structures
Shortening of posterior musculature
possible predisposition to facet syndrome

2

What are the effects of a hypolordotic curve

compression of the anterior disc
prolonged stress on the posterior ligaments
shortening of anterior cervical muscles
protective splinting

3

What is the degrees of flexion in the cervical spine

60˚

4

What is the GROM for extension in the cervicals spine

75˚

5

What is the GROM for lateral flexion in the cervical spine

45˚ to each side

6

What is the GROM for rotation in the cervical spine

80˚ chin to shoulder

7

What are the big trends for flexion extension in the cervical

Most in CO-C1
Least C2-3, and C7-T1

8

What is the combined range for flexion/extension of C0-1

25˚

9

What is the IAR for flexion/extension CO-C1

just above odontoid

10

What is the paradoxical movement of the occiput for flexion/extension

during cervical flexion a large percentage of the population will extend at CO-C1 at end range of cervical flexion

11

During flexion what direction is the roll? What direction is the slide?

Roll: Anteriorly
Slides: Posteriorly

12

What is the SROM for lateral flexion at CO-C1

5˚ each side

13

What limits the lateral flexion of CO-1

Alar ligaments

14

What is the IAR for lateral flexion of C1-0

located midway between odontoid tip and EOP

15

What is occuring on the articular surface of CO-1 during lateral flexion

C0 is gliding down the ipsilateral articular surface while the contralateral side glides up

16

What are the two patterns of motion of lateral flexion in C0 - C1

Predominately a movement in the coronal plane
coupled with contralateral rotation

17

What is the SROM of rotation of CO-1

5˚ to each side

18

What occurs at the articular surface during rotation of CO-1

C0 articular surface slides posterior and superior on the ipsilateral articular surface of C1. On the contralateral side it slides anterior and superior

19

What is the main feature of the C1-2 joint articulation besides the odontoid

That the facets of both bones are convex

20

What is the type of cartilage lines the posterior portion of the ondontoid

fibrocartilage

21

What is the SROM for flexion/extension at C1-2

Combined motion of 20˚

22

What is the IAR for flexion/extension C1-2

middle third of dens

23

What is the pattern of motion for C1-2

angular sagittal plane motion coupled with sagittal plane translation

24

What happens in flexion at the joint articulation of C1-C2

posterior jt surfaces and posterior arches separate while C1 articular surface slides posteriorly

25

What is the SROM of lateral flexion of C1-2

limited
5˚ to each side

26

What happens at the articular surfaces during lateral flexion at C1-2

C1 translates on the C2 articular surfaces toward the side of lateral flexion

27

What is the SROM of rotation at C1-2

Huge!
40˚ to each side

28

How much of cervical rotation occurs at the C1-2 articulation

~1/2

29

How degrees of rotation occur exclusively at C1-2

The first 25˚

30

What is the IAR of rotation for C1-2

vertical axis in dens