Listing Subluxation Flashcards

1
Q

Why do we call ASIN & PIEX married listings?

A

because they have the same mechanical effects on the spine

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2
Q

Where is the convexity on PLS-M?

A

Right side

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3
Q

Where is the convexity on PRS-M?

A

Left side

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4
Q

Where is the convexity on PRI?

A

Right side

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5
Q

Where is the convexity on PLI-sp

A

Left side

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6
Q

Name the 5 sacral misalignments:

A
P-R
P-L
PI-R
PI-L
BP
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7
Q

What are the married listings?

A

ASIN

PIEX

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8
Q

The sacrum misaligns to the ilium at the _____

A

SI joint

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9
Q

How much rotation of the sacrum is significant when there is no ilium misalignment?

A

4-6 mm

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10
Q

What do we suspect when the dimensions of the obturators are equal?

A

No ilium misalignment –> AS, PI, EX, & IN all affect the obturator dimensions

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11
Q

What misalignments can occur at the SI joint?

A
  • AS, PI, IN, & EX

- P-R, P-L, PI-R, PI-L

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12
Q

Name the 3 occcyx lisitngs:

A

A, A-R, A-L

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13
Q

What condition causes the sacrum to appear to move posterior?

A

spondylo of L5

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14
Q

List the 8 characteristics of EX ilium:

A
  • Narrower Innominate
  • Wider horizontal obturator forament
  • HYPERlordosis of lumbars
  • Lowers femur head
  • Posterior SI Joint open (edema)
  • Internal foot rotation (“toe-in”)
  • Gluteal fold narrower and peaked
  • Wear on medial heel and lateral sole
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15
Q

List 8 characteristics of IN ilium:

A
  • Wider Innominate
  • Narrower horizontal obturator forament
  • HYPOlordosis of lumbars
  • Raises femur head
  • Anterior SI joint open (edema)
  • External foot roation (“toe-out”)
  • Wide & flat gluteal fold
  • Wear on lateral heel and medial sole
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16
Q

List 8 characteristics of PI ilium:

A
  • Longer Innominate
  • Larger vertical obturator forament
  • HYPERlordosis of lumbars
  • Spongy edema at posterior/superior SI joint
  • Sacrum anterior on involved side
  • Leg will be shorter
  • Gluteal fold will be lower
  • Lower Femur Head
17
Q

List 8 Characteristics of AS ilium:

A
  • Shorter innominate
  • Shorter vertical obturator forament
  • HYPOlordosis of lumbars
  • SPongy edema at posterior/inferior SI Joint
  • Sacrum posterior on the involved side
  • Leg will be longer
  • Gluteal fold will be higher
  • Higher Femur Head
18
Q

WHat happens to a child with an AS occiput?

A
  • they might walk on their toes or bang their head into the wall in effect to decrease the pressure that is caused by the AS occiput
  • These children also have a flathead due to the banging of their head
19
Q

How do you list IN-EX or EX-IN listings?

A
  • always list the left ilia first, then right
  • no A/P misalignment
  • no lumbar rotation
20
Q

What happens to the sacrum & lumbar spine when the ilium misaligns AS?

A
  • because the edema is located in posterior/inferior aspect of the joint,
  • the ilium has a weight-bearing shift anteriorly
  • this causes the sacrum to compensate by rocking posterior
  • which then causes the lumbars to compensate and results in HYPOlordosis
21
Q

What happens to sacrum & lumbar spine when the ilium misaligns PI?

A
  • Because the edema is in the posterior/superior aspect of the joint,
  • the ilium has a weight-bearing shift posteriorward
  • this causes the sacrum to compensate by rocking anterior
  • which then causes the lumbars to compensate and results in HYPERlordosis
22
Q

What does the misalignment of the ilia cause?

A

weight-bearing change which is compensated for by the sacrum & lumbar spine

23
Q

What region is most commonly associated with cord pressure?

A

Upper cervical

24
Q

What level is most commonly associated in cord pressure?

A

Atlas

25
Q

Who is susceptible to posterior sacral base?

A

Pre-adolescents who articular processes haven’t completely ossified

26
Q

How do you best determine subluxation or compensation of an ilium on the AP film?

A
  • subluxation is most commonly found on the side of the lowest lumbar body rotation
  • Usually L5