02 Lumbar Spine 1 Flashcards Preview

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Flashcards in 02 Lumbar Spine 1 Deck (39):
1

characteristics of lumbar vertebrae

- larger bodies and intervertebral discs
- larger intervertebral foramina
- short thick spinous processes

2

normal curvature

posterior concave

3

excessive curvature

lordosis

4

shape of vertebral foramen

triangular

5

shape of body

kidney shaped

6

The first hint of any form of arthritic changes occurs in this area

T8-T12

7

arthrokinematics of T8-T12

varied, difficult to describe

8

Is there spinal coupling in the lumbar spine?

general consensus is no

9

vertebral bodies

- cancellous bone center
- compact bone rim

10

most back pain is

- mostly generic mechanical back pain
(muscle, facet, etc.)

- don't get a lot of fractures or dislocations

11

iliopsoas

- combo of iliacus and psoas
- talk about them collectively

12

transversus abdominis and relation to multifidus

- TRA wraps around to the side and blends with multifidus in the back
- forms a corset

13

core muscles in lumbar spine

- multifidus
- TRA

14

sacrum consists of ___ vertebrae that are fused

5

15

What type of joints are between vertebral bodies and discs?

- symphyses
- do not slide across each other

16

disc layers

- annulus fibrosus
- nucleus pulposus

17

weak spot in lumbar spine

L1

18

Nerve that contributes to loss of bowel and bladder function

pudendal nerve

19

5th lumbar disc is between _____ and ______ and sits on top of the _________

- L5, S1
- sacral promontory

20

most commonly herniated lumbar disc is

L5

21

The coccyx consists of

3-5 fused rudimentary vertebrae

22

How many sacral nerves are there?

5

23

coccyx is found where?

runs from superior anal cleft (SAC) to anus

24

The sacrum articulates with the ______ laterally and ______ superiorly and is this type of joint

- ilium
- disc
- irregular synovial joint (symphysis)

25

The anterior and posterior sacral foramina permit

nerve exit

26

movement at the SI joint

- between 1 and 4 degrees of motion
- only a little

27

articular surfaces of SI joint

- sacral: fibrocartilage (susceptible to OA changes)
- ilium: hyaline cartilage

28

male pelvis sits _____ than the female pelvis

higher

29

primary action of the lumbar spine is

flexion and extension in the sagittal plane

30

During flexion, the superior portion of the facet slides ______

upward

31

rotation and side bending in the lumbar spine

very little, but the same rules apply as with cervical and thoracic

32

ALL resists

hyperextension
broad

33

PLL resists

hyperflexion
narrow

34

ligamentum flavum resists

hyperflexion

35

gliding movements superior and inferior produce

flexion and extension

36

Why are lateral flexion and rotation limited in the lumbar spine?

has to do with the shape of the articular surfaces

37

nucleus pulposus action during flexion and extension

- flexion: moves posteriorly because disc bulges that direction
- extension: moves anteriorly

38

shapes of the facet joints (superior/inferior)

- inferior: cup shaped
- superior: fit in the cup below

39

flexion/extension and neural foramen

- flexion opens it
- extension closes it