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COMLEX - OMED > Chapter 6 - Sacrum & Innominates > Flashcards

Chapter 6 - Sacrum & Innominates Flashcards

1
Q

Innominate - 3 fused bones

A

ilium, ischium, & pubis

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2
Q

Sacral promontory

A

anterior portion of S1

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3
Q

3 Innominate articulations

A

Acetabulum - femur; SI joint - sacrum; pubic symphysis

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4
Q

True Pelvic Ligaments

A

Anterior, posterior, & interosseous sacroiliac ligaments - stabilize SI joint

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5
Q

Accessory Pelvic Ligaments

A

Sacrotuberous, Sacrospinous, & Iliolumbar ligaments

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6
Q

Sacrotuberous ligament

A

ILA -> ischial tuberosity

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7
Q

Sacrospinous ligament

A

Sacrum -> ischial spines

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8
Q

Sacrospinous ligament divides

A

greater & lesser sciatic foramen

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9
Q

Iliolumbar ligament

A

TP of L4-L5 -> medial side of iliac crest

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10
Q

1st ligament to become painful in lumbosacral decompensation

A

Iliolumbar ligament

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11
Q

Primary pelvic muscles - pelvic diaphragm

A

levator ani & coccygeus

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12
Q

Secondary pelvic muscles - partial attachment to true pelvis

A

Iliopsoas, obturator internus, piriformis

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13
Q

Piriformis origin

A

inferior, anterior sacrum

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14
Q

Piriformis insertion

A

greater trochanter of femur

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15
Q

Piriformis action

A

ER, extension of thigh, abduction w/ hip flexed

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16
Q

Piriformis innervation

A

S1 - S2

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17
Q

Piriformis hypertonicity

A

entire or perineal portion of sciatic n. may run through Piriformis causing buttock pain that radiates down the thigh

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18
Q

Innominates rotate about which sacral axis (anterior/posterior innominate)

A

inferior transverse axis

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19
Q

Respiratory motion occurs about which sacral axis

A

superior transverse axis at level S2

20
Q

During inhalation, the sacral base moves

A

POSTERIORLY

21
Q

During exhalation, the sacral base moves

A

ANTERIORLY

22
Q

Craniosacral/Inherent motion occurs about which sacral axis

A

superior transverse axis at level S2

23
Q

During craniosacral flexion, the sacral base moves

A

POSTERIORLY or Counternutates

24
Q

During craniosacral extension, the sacral base moves

A

ANTERIORLY or nutates

25
Q

Postural motion occurs about which sacral axis

A

middle transverse axis

26
Q

As a person bends forward, the sacral base moves

A

ANTERIORLY

27
Q

At terminal flexion, _______________ ligaments are taut & the sacral base moves _______________.

A

Sacrotuberous ligaments; POSTERIORLY

28
Q

Weight bearing on the Left leg will engage which sacral axis?

A

left oblique

29
Q

+Standing flexion test =

A

Sacroilial dysfunction

30
Q

Anterior innominate etiology

A

tight quadriceps

31
Q

Superior innominate etiology

A

fall on the ipsilateral buttock or a mis-step

32
Q

Posterior innominate etiology

A

tight hamstrings

33
Q

Superior pubic shear etiology

A

trauma or tight rectus abdominus

34
Q

Inferior pubic shear etiology

A

trauma or tight adductors

35
Q

Who described sacral dysfunctions in relation to the ilium?

A

Strachan in 1938

36
Q

Who described sacral dysfunctions in relation to L5?

A

Mitchell in 1958

37
Q

In sacral torsion, L5 is SB

A

engaging the oblique axis on that same side

38
Q

In sacral torsion, L5 is rotated

A

opposite of sacral rotation

39
Q

In sacral torsion, the seated flexion test is +

A

on the opposite side of the oblique axis

40
Q

Lumbosacral spring test is +

A

if the sacral base has moved posterior (backward torsion or sacral extension)

41
Q

In backward torsion, L5 is

A

non-neutral

42
Q

In backward torsion, which tests are positive

A

lumbosacral spring test & positive backward bending test

43
Q

Bilateral sacral flexion/extension, seated flexion test is

A

FALSELY NEGATIVE (both SI joints are restricted so asymmetry cannot be appreciated)

44
Q

Due to birthing mechanics, what is a common sacral SD finding in postpartum pts?

A

Bilateral sacral flexion

45
Q

Which would have a +lumbosacral spring test, Bilateral sacral flexion or extension?

A

Bilateral sacral extension

46
Q

psoas syndrome - common lumbar SD finding

A

L1 or L2 flexed, SB & rotated toward side of iliopsoas contracture

47
Q

OMT for sacral SD should 1st begin w/

A

treating L5 SD

COMLEX - OMED (20 decks)

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