Chapter 6 - Innominate and Sacrum Flashcards

1
Q

True pelvic ligaments

A

Anterior, posterior, and interosseous SI ligaments

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2
Q

Accessory pelvic ligaments - w/ origins and insertions

A

Sacrotuberous - ILA –> ischial tuberosity
Sacrospinous - sacrum –> ischial spines
Iliolumbar - TP of L4-L5 –> medial iliac crest

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3
Q

Pelvic ligament that divides the greater and lesser sciatic foramen

Pelvic ligament that is FIRST painful in lumbosacral decompensation

A

Sacrospinous

Iliolumbar

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4
Q

Pelvic diaphragm muscles

Also called ___ pelvic muscles

A

Levator ani
Coccygeus

“TRUE”

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5
Q

Piriformis - origin and insertion

Actions?

A
O = inferior anterior sacrum
I = greater trochanter

Externally rotate thigh
Extends and Abducts WHEN FLEXED

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6
Q

Piriformis hypertonicity - subject to what?

Pain to where?

A

Sciatic pain

To the KNEE (not below)

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7
Q

Axis for innominate rotation

A

Inferior transverse (S4)

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8
Q

Axis for sacral respiratory movement

A

Superior transverse (S2)

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9
Q

Axis for sacral craniosacral movement

This motion is called ____

A

Superior transverse (S2) - same as respiratory

Inherent (craniosacral)

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10
Q

Axis for sacral postural movement (flexion/extension)

At terminal flexion of the sacrum, _____

A

Middle transverse (S3)

The sacrotuberous ligaments become taut, pulling the sacral base posteriorly

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11
Q

While walking on the LEFT leg, the sacrum moves about a ____ axis

While walking on the RIGHT leg, the sacrum moves about a ____ axis

This motion is called ____

A

LEFT oblique axis

RIGHT oblique axis

Dynamic

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12
Q

Anterior innominate SD - cause?

Posterior innominate SD - cause?

A

Tight quadriceps

Tight hamstrings

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13
Q

Other names for superior innominate shear (2)

Causes (2)

A

Innominate upslip, Superior innominate subluxation

Fall on buttock, mis-step

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14
Q

Superior pubic shear - causes (2)

Abnormal test findings? (3)

A

Trauma
Tight rectus abdominus

Superior pubic bone
Positive standing flexion test
ASIS compression restriction

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15
Q

Inferior pubic shear - causes (2)

Abnormal test findings?

A

Trauma
Tight adductors

Inferior pubic bone
Positive standing flexion test
ASIS compression restriction

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16
Q

*****3 rules about sacral torsions in regards to L5

A
  1. L5 sidebent = same side sacral oblique axis
  2. L5 rotated = sacrum rotates the opposite way
  3. ***Seated flexion is positive on OPPOSITE side of axis
17
Q

Using the 3 rules of sacral torsions…

If L5 is F RR SR, the sacrum will be ____

A

Rotated LEFT on a RIGHT oblique axis

18
Q

Positive lumbosacral spring test means _____

A

POSTERIOR sacral base

19
Q

Anterior sacral torsion…findings for the MOVING ILA?

Posterior sacral torsion…findings for the MOVING ILA?

ANY sacral torsion…findings for the lumbar curvature?

A

Posterior and slightly INFERIOR

Anterior and slightly SUPERIOR

CONVEX to the OPPOSITE side of the axis

20
Q

Sacral springing is restricted at R sulcus, L and R ILA
Sacral springing is present at the L sulcus

Diagnosis?

A

R on R sacral torsion

21
Q

Positive seated flexion on the LEFT
Springing motion present at the R ILA only
Positive lumbosacral spring test
Positive backward bend test

What will L5 be?

A

L on R sacral torsion

L5 SR RR (flexed or extended)

22
Q

Positive backward bend test = ?

A

Posterior motion at the sacral base

23
Q

“Sacral rotation on an oblique axis”…define?

Treatment?

A

Sacral torsion + L5 rotated to SAME SIDE

Correct the L5 dysfunction first

24
Q

Bilateral sacral dysfunctions…axis? Same as what?

A

Middle transverse (S3) - same as POSTURAL motion

25
Q

Bilateral sacral dysfunction…seated flexion test finding?

A

NEGATIVE (falsely)

26
Q

Flexion bilateral sacral dysfunction…lumbar curve?

Extension bilateral sacral dysfunction…lumbar curve?

A

INCREASED

DECREASED

27
Q

Post-partum - common dysfunction in the mother?

A

Bilateral sacral flexion

28
Q

Unilateral sacral flexion…ipsilateral ILA findings?

A

Significantly INFERIOR

Slightly POSTERIOR

29
Q

Unilateral sacral flexion…describe

A

SB TOWARD, Rotate FORWARD

30
Q

Unilateral sacral extension…describe

A

SB AWAY, Rotate BACKWARD

31
Q

Unilateral sacral extension…ipsilateral ILA findings?

A

Significantly SUPERIOR

Slightly ANTERIOR