Brainscape's Knowledge GenomeTM

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


See full index

MSK 2 > Pelvis/SIJ Anatomy, Biomechanics & Definitions > Flashcards

Pelvis/SIJ Anatomy, Biomechanics & Definitions Flashcards

1
Q

Which supporting ligament of the SI joint is the weakest?

A

-ventral (anterior sacroiliac)

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

Which supporting ligament of the SI joint is the strongest?

A

-interosseous

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

anterior SIJ neurology

A

-ventral rami of L3-S1

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

posterior SIJ neurology

A

-posterior rami of L4-S2

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

sacroiliac motion

A

-movement of sacrum on the ilium

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

How is sacral motion described?

A

-by the way the anterior surface is facing

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

sacral nutation

A
  • flexion
  • relative movement of anterior tilt of the top of the sacrum on the ilium
  • occurs during exhalation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

sacral counternutation

A
  • extension
  • relative posterior tilt of the top of the sacrum on the ilium
  • occurs during inhalation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

anterior ilial rotation

A

-ASIS & pubis roll down, ischial tuberosity moves posterior & PSIS superiorly

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

posterior ilial rotation

A

-superior ilium rocks backwards & ASIS & pubis roll up, the ischial tuberosity moves anterior & the PSIS moves inferiorly

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

transverse plane osteokinematics of sacrum

A
  • rotation (torsion)
  • named by the direction the sacrum rotates TOWARD
  • the unilateral movement of the sacral base occurs in transverse plane around an oblique axis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

relationship of sacrum & innominate during sacral nutation

A

-innominate posteriorly rotates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

relationship of sacrum & innominate during sacral counternutation

A

-innominate anteriorly rotates

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

How do the innominates rotate during trunk forward bending?

A

-rotate anteriorly

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

How do the innominates rotate during trunk backward bending?

A

-posteriorly

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

Incidence (in percent) of Pelvis/SIJ dysfunction

A

-15% of all complaints of lower back pain

17
Q

What kind of diagnostic imaging is considered to be the “gold standard” of diagnosis for SIJ pathology?

A

-SIJ fluoroscopic blocks

18
Q

Function of Pelvis/SIJ

A
  1. transfer load from trunk to legs during gait as well as during upright movements
  2. absorb LE motion before reaching lumbar spine
  3. stability
19
Q

Innominate bilateral anterior rotation occurs during what trunk motion?

A

Trunk flexion

20
Q

Innominate bilateral posterior rotation occurs during what trunk motion?

A

Trunk extension

21
Q

Innominate unilateral anterior rotation occurs during which motion happening in the LEs?

A

LE extension

22
Q

Innominate unilateral posterior rotation occurs during which motion at the LEs?

A

LE flexion

23
Q

Iliosacral disorder: anterior rotation definition & how it presents itself

A

Superior ilium rocks forward, ASIS & pubis roll down, ischial tuberosity moves posterior & the PSIS superiorly

24
Q

Iliosacral disorder: posterior rotation definition and how it presents itself

A

Superior ilium rocks backwards & the ASIS & pubis roll up, the ischial tuberosity moves anterior & the PSIS moves inferiorly

25
Q

Inflare

A

ASIS is relatively more medial compared to unaffected side & PSIS is more lateral.
A normal motion during hip internal rotation

26
Q

Outflare

A

ASIS is relatively more lateral compared to unaffected side & PSIS is more medial.
Occurs normally during hip external rotation

27
Q

Upslip

A

One side of the pelvic girdle is up compared to the opposite side & can occur from a sudden step down, like missing a curb with the knee extended.
-appears more commonly than sow slip

28
Q

Downslip

A

Rare occurrence due to trauma such as being pulled by the LE and is defined as one side of the pelvic girdle being down compared to the opposite side

29
Q

Which plane and around which axis do downslips and upslips occur?

A

In the frontal plane around a sagittal axis

30
Q

Sacral bilateral flexion occurs during what movements/motions?

A

Supine to stand; initial stages of trunk flexion

31
Q

Sacral bilateral extension occurs during what movements/motions?

A

Supine lying; sometimes at the end of trunk flexion

32
Q

Sacral unilateral flexion occurs during what motion?

A

Flexion of LE

33
Q

Sacral unilateral extension occurs during what motion?

A

Extension of LE

34
Q

Anterior sacral torsion - left side

A

(Left oblique axis) as sacrum rotates left on the axis, the upper right corner of the sacrum moves anterior into the body. This makes the right sacral sulcus more prominent (deeper)

35
Q

Sacral anterior torsion - right

A

(Right oblique axis) as sacrum rotates to the right on the axis, the upper left corner of the sacrum moves into the body. This might make the left sacral sulcus more prominent (deeper)

MSK 2 (16 decks)

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