SIJ

Question 1

What is the pelvic girdle?

Answer 1

2 SIJs and pubic symphysis
3 joint complex
transmits and distributes forces during function from cranial to caudal and vice versa

Question 2

Form vs force closure

Answer 2

Form- stability due to form or shape alone

Force- joint stability from external forces and supportive structures
Ex: muscle, ligament

Question 3

Long posterior SI ligament

Answer 3

inferior margin of PSIS to border of sacrum

-restrain anterior innominate rotation

Question 4

short posterior SI ligament

Answer 4

sacral body tomedial PSIS

- restrains against virtually any innominate or sacral motion

Question 5

sacrotuberous ligament

Answer 5

broad origin from lower half of sacrum to ischial tuberosities
- restrains sacral nutation or flexion and posterior innominate rotation

Question 6

Innominate internal rotation

Answer 6

takes place during initial contact and loading response

Question 7

innominate external rotation

Answer 7

midstance to preswing

Question 8

sacral rotation

Answer 8

• coupled side bending and rotation
• based on oblique axi
• rotation of the sacrum is opposite to the sidebending of the lateral spine
• Ex: Right L/S sidebending= Left rotation on left oblique axis

Question 9

SIJ Pain provocation Tests

Answer 9

Patrick’s test of Faber’s test
-posterior pelvic pain provocation test (thigh thrust)- most sensitive

• sacral springs
• compression
• distraction
• Gaenslen’s test (right and left)

Question 10

SIJ gait assessment

Answer 10

• Pelvis must move symmetrically
• Should be stable in frontal plane
• observe for some type of vaulting over a longer leg
• stability in frontal plane typically from muscular deficiency

Question 11

SIJ

Shear dysfunction

Answer 11

innominate, sacrum or pubes subject to excessive shearing and has been displaced and locked in abnormal position

Question 12

SIJ

muscle imbalances

Answer 12

-muscle or group of muscles have abnormally high resting tone interfering with regular motion

Question 13

Tissue sources of lumbosacral pain?

Answer 13

• lumbar facet joints
• soft tissue- muscles, ligaments, tenson
• intervertebral discs
• sacroiliac joint
• pubic symphisis

Question 14

Pain pattern for Pelvic girdle pain

Answer 14

• Located under PSIS
• Gluteals area
• Posterior thigh
• Groin (specifically over the pubic symphysis)

Question 15

Change in balance as pregnancy advances objective test

Answer 15

increased anterior-posterior sway
increased stance width

use tests like:

• short physical performance battery
• functional reach test
• gait speed