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Year 2 Quarter 3 Practical Theory > Sacroiliac joint > Flashcards

Sacroiliac joint Flashcards

1
Q

During gait, which piriformis is active?

A

The one on the weight bearing side

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2
Q

Why is the flexion test positive in the event of SI joint dysfunction?

A

If the SI joint is locked up, it drags the innominate with it.

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3
Q

What does a flexion test tell us in relation to the SI joint?

A

Which side may have a dysfunction

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4
Q

Dysfunctions of the pelvis

A

Innominate rotation, innominate flare and subluxation at the pubic symphysis

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5
Q

Which muscles will pull the pubic symphysis into subluxation?

A

The adductors

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6
Q

Sacral dysfunctions

A

Sacral torsions (anterior or posterior)

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7
Q

Anterior torsions of the sacrum involve…

A

Sacral flexion and rotation

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8
Q

Anterior sacral torsions

A

Right on right and left on left

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9
Q

Posterior sacral torsions involve…

A

Extension and rotation

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10
Q

Posterior sacral torsions

A

Right on left and left on right

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11
Q

What does the first blank in a sacral torsion name tell you?

A

Which way the sacrum is rotated

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12
Q

What does the second blank in a sacral torsion name tell you?

A

The axis that it’s stuck on

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13
Q

How is the side of rotation in a sacral torsion identified?

A

By palpating the depth of the sacral ulcus and the inferior lateral angle.

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14
Q

Neutral spine mechanics

A

Rotation and side bending occurs to oppostie sides

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15
Q

Non-neutral spine mechanics

A

Rotation and side bending occur to the same side

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16
Q

Spine mechanics of the neck

A

Non-neutral; rotation and sidebending occur to the same side.

17
Q

MOI in a same on same sacral torsion

A

Same multifidus, opposite piriformis, same psoas, opposite quadratus lumborum

18
Q

MOI in a same on opposite sacral torsion

A

Opposite piriformis, same multifidus, same psoas, opposite QL

19
Q

Why is the multifidus the primary MOI in anterior torsions?

A

It holds the sacrum in a flexed position

20
Q

Why is the opposite side piriformis the primary MOI for posterior torsions?

A

It holds the sacrum extended.

21
Q

The effects of psoas and QL on sacral torsions

A

They don’t usually cuase the torsions, but they can reinforce previously created issues.

22
Q

Psoas is on the same side as which primary MOI in sacral torsions?

A

Multifidi

23
Q

QL is on the same side as which MOI in sacral torsion?

A

Piriformis

24
Q

What does the psoas do in response to sacral torsion?

A

It adaptively shortens to the rotated positions.

25
Q

What does the QL do in response to sacral torsion?

A

It increases isometric or eccentric tone to match the multifidus on the oppostie side.

26
Q

False positives in the standing flexion test

A

Trust the seated flexion test over the standing due to the effects of the hamstrings.

27
Q

Why does sitting down make the hamstrings shorter?

A

The femur just spins in the acetabulum, but the knee joint rolls and glides. It travels enough that the total path length is altered.

28
Q

MOI in anterior innominate rotation

A

Tight rectus femoris, weak hamstrings

29
Q

MOI in posterior innominate rotation

A

Tight hamstrings, weak rectus femoris

30
Q

MOI of innominate inflare

A

Tight iliacus, weak TFL, glute med or glute min. Tight fibers of the internal oblique below the ASIS may also contribute.

31
Q

MOI of innominate outflare

A

Tight TFL, glute med or glute min, weak iliacus. Weak fibers of the internal oblique below the ASIS may also contribute.

32
Q

Apparent short leg test application

A

The patient lies prone. The therapist palpates the medial malleoli and compares their distance from the body.

33
Q

What can the apparent short leg test be used for?

A

If the right leg appears shorter, it may indicate that the sacrum is rotated right. Can be used as a backup if the sulcus and ILA show opposite findings.

34
Q

Springy lumbar test application

A

Patient lies prone and the therapist compares the springiness of the thoracic and lumbar vertebrae.

35
Q

Positive sign in springy lumbar test

A

The thoracic and lumbar vertebrae have the same springiness.

36
Q

If the lumbar vertebrae is not springy, what does this mean?

A

The lumbar vertebrae is stuck flexed. This means that the sacrum is extended and there may be a posterior sacral torsion.

37
Q

What can a non-springy lumbar confirm?

A

A posterior sacral torsion

Year 2 Quarter 3 Practical Theory (3 decks)

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