Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Axial skeleton: Anatomy and Biomechanics > lumbar biomechanics > Flashcards

lumbar biomechanics Flashcards

1
Q

Which portion of the IVD allows for stress resistance in many directions?

A

annulus fibrosus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which portion of the IVD is composed of type I AND II collagen? In lumbar

A

annulus fibrosus

-provide for a balance between strength and flexibility

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which portion of the IVD is composed of 70-90% H2O?

A

nucleus pulposus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which portion of the IVD is composed of elastin/type II collagen? In lumbar

A

nucleus pulposus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which portion of the IVD is responsible for nutrient transport?

A

nucleus pulposus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which portion of the IVD functions as a growth plate in children?

A

vertebral endplate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the height (%) is the endplate in the IVD at birth and in adult

A

children: 50%
Adult: 5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which portion of the IVD is continuous with the annulus fibrosus?

A

vertebral endplate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What motions does the iliolumbar ligament resist?

A

flexion, extension, axial rotation, and side bending (at L5-S1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What motions does the sacrotuberous ligament stabilize?

A

against flexion of the sacrum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What motions does the sacrospinous ligament resist?

A

flexion of the sacrum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the thoracolumbar fascia? What does it do?

A
  • connective tissue traveling from T12 to the iliac spine and iliac crest
  • attachment site for muscles
  • stabilized the spine
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Arthokinematics of zygapophyseal joint: flexion

A
  • Anterior translation

- Anterior rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Arthokinematics of zygapophyseal joint: extension

A
  • Posterior translation

- Posterior rotation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Arthokinematics of zygapophyseal joint: rotation

A

-ipsilateral- posterior glide
-contralateral- anterior glide
- type 1 coupling (only in extend position)
mostly occurs in thoracic spine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Arthokinematics of zygapophyseal joint: side bending

A

ipsilateral- inferior glide/approximation
contralateral- superior glide/gapping
- type 1 coupling (only in extend position)

17
Q

Closed position, open position, and capsular pattern in lumbar

A

closed: full extension
open: midway between flexion and extension
capsular pattern: side bending> flexion/extension

18
Q

What is the capsular pattern for sacroiliac joint?

A

pain when the joints are stressed

19
Q

Arthokinematics sacroiliac nutation (flexion)

A
  • superior sacrum moves anteriorly

- inferior sacrum moves posteriorly

20
Q

Arthokinematics sacroiliac counternutation (extension)

A
  • superior sacrum moves posteriorly

- inferior sacrum moves anteriorly

21
Q

Normal lumbopelvic rhythm

A

40 deg lumbar flexion

70 deg hip/pelvic flexion

22
Q

Decreased plevic rhythm

A
  • increased lumbar flexion

- increased stress of lumbar spine

23
Q

Decreased lumbar rhythm

A
  • increased hip/pelvic flexion

- increased stress of hips/pelvis

24
Q

Describe phase 1 of lumbopelvic rhythm

A
  • Hamstrings fire/gluteus maximus fire
  • Lumbar extensor begin to fire
  • Hip/pelvic flexion decreased
25
Q

Describe phase 2 of lumbopelvic rhythm

A
  • Hamstrings/gluteus maximus continue to fire
  • Lumbar extensors increase force they are producing
  • Lumbar flexion decreased
  • Hip/pelvic flexion back to neutral
26
Q

Describe phase 3 of lumbopelvic rhythm

A

• Lumbar and pelvis/hip neutral

27
Q

Components of an anterior pelvic tilt

A
  • Tight: lumbar extensors and hip flexors
  • Increased lumbar lordosis
  • Posterior tilting of vertebrae
  • Anterior migration of nucleus pulposus
28
Q

Components of a posterior pelvic tilt

A
  • Tight: anterior abdominals and hip extensors
  • decreased lumbar lordosis (increased kyphosis)
  • anterior tilting of vertebrae
  • posterior migration of nucleus pulposus
29
Q

What is a spondylolisthesis?

A

When once of the vertebrae slips forward onto the vertebra below it

30
Q

What is disc degeneration?

A

loss of fluid in the intervertebral discs

31
Q

What is ankylosing spondylitis?

A

chronic inflammatory disease that affects the spine, SI, and hips that can eventually lead to body fusion of the joints

Axial skeleton: Anatomy and Biomechanics (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions