LECTURE 4A Flashcards

1
Q

isolated SI joint probs are common TRUE OR FALSE

A

false: RARE

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2
Q

SI joint is the ____ understood joint in the body

A

least
SI joint does not MOVE
(or if it does move, moves minimally)

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3
Q

SI joint most commonly refers where

A

LBP
or hip
*mechanical/non-specific LBP

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4
Q

___% of people with non-specific LBP have SI joint pain

A

15-30%

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5
Q

women have a __, ___ pelvis than men

A

wider, flatter pubic arch (U SHAPE)
wider bigger pelvic inlet

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6
Q

sacrum concavity is on the ____ side

A

anterior

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7
Q

what muscle originates at anterior aspect of S2, 3, 4:

A

pirformis

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8
Q

what 2 mm directly produce SI joint motion?

A
  1. pirformis
  2. pubococcygeal
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9
Q

what motions do the pirformis do?

A
  1. hip external rotation, hip abduction
  2. when hip flexes over 90, pirformis becomes hip IR
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10
Q

LBP and hip dysfunction is ___ than SIJ dysfunction

A

way more common
1. LBP + SIJ
2. hip + SIJ

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11
Q

___% of people with LBP have ____ related pain

A

15-30% have SI joint related pain!

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12
Q

what muscle really likes infection

A

iliopsoas
(absess, hematoma)
1. TB
2. osteomyelitis

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13
Q

most common complaint of SI joint dysfunction

A

TTP over region of PSIS

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14
Q

what are other complaints of SI joint pain?

A

pain with transitional movements (sitting to standing, standing to sitting/lying)
2. SLS activity pain (stairs, gait)
3. end range SLR active pain (after 90)
4. prolonged sit/standing

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15
Q

SACRAL NUTATION

A

base: anterior
apex: posterior
innominates are posterior (posterior pelvic tilt, decreased lumbar lordosis)

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16
Q

SI joint exam is ALWAYS performed in addition to:

A
  1. lumbar spine exam
    OR
  2. hip joint exam
    OR both
17
Q

what is the most reliable for SI joint special tests?

A

provocation and stress tests are MOST RELIABLE
*pain provoking (bc dichotomous: yes or no)

18
Q

what muscles attaches to the sacrum on the posterior side?

A

erector spinae
multifidi
glute max
Thoracolumbar fascia

19
Q

The ___ of each innominate articulates with the sacrum to form the SI joint

A

ilium

20
Q

anterior SI ligaments do waht

A

bind sacrum and ilia LIMIT ALL MOTIONS
*pain generators

21
Q

interosseous ligaments of SI joint do what?

A

LIMIT anterior and inferior movement of the sacrum
*most important ligament! binds sacrum to ilia

22
Q

palpation of this ligament indicates SI joint dysfunction

A

Interosseous SI ligaments

23
Q

posterior SI joint ligaments limit what rotation?

A

anterior iliac rotation (sacral counternutation)
*pain generators!

24
Q

which SI joint ligament serves as an attachment for erector spinae, glute max, and TL fascia?

A

posterior SI joint ligaments

25
Q

Sacrotuberous ligament limits WHAT

A

posterior iliac rotation
*sacral nutation

Isch tub to PSIS-continues with biceps femoris tendon

26
Q

sacrospinous ligament limits what?

A

posterior iliac rotation (sacral nutation)
*goes from ischial spine to sacrum

27
Q

what is known as the arch support or keystone of the pelvis?

A

pubic symphysis
*common source of groin pain in athletes

28
Q

Which muscles work in coordination to assist in lumbopelvic stability?

A

pelvic floor!
levator ani (PR, PC, IC, C)

29
Q

posterior pelvic/LE muscles

A
  1. Erector spinae
  2. QL
  3. glute max
  4. glute med
  5. glute min
  6. TFL
  7. Pirformis
  8. adductors
  9. hamstrings
30
Q

anterior pelvic muscles

A

abs
TFL
iliopsoas
quads/rectus femoris
adductors

31
Q

posterior oblique system

A

latissimus dorsi +
contralateral glute max
thoracolumbar fascia

32
Q

anterior oblique system

A

EO + IO
contralateral hip adductors
anterior abdominal fascia

33
Q

lateral muscle system includes…

A

glute med and glute min, contra hip adductors

34
Q

inner muscle system is made of what?

A
  1. multifidi
  2. TA
  3. pelvic floor
  4. diaphragm
35
Q

inner muscle system (diaphragm, TA, multidifi, pelvic floor) do what?

A

stabilize the SI joint (like a coke can)

36
Q
A
36
Q

posterior portion of the SI joint is innervated by

A

posterior rami of L3-S3

37
Q

nutation of sacrum is limited by…

A

SI, ST, sacrospinous ligaments

38
Q

sacral counternutation is limited by

A

SI ligaments (close pelvic outlet with counternutation)