Sacroiliac Joint

Question 1

earlier occurrence of femoral acetabular impingement is resulted from what?

Answer 1

anterior pelvic tilt

Question 2

later occurrence of femoral acetabular impingement is resulted form what?

Answer 2

posterior pelvic tilt

Question 3

what are the 4 functions of the SI joint?

Answer 3

bear weight, transmit forces, absorb forces, and be mobile

Question 4

what is the joint classifciation between the tuberosities of the sacrum and the ilium?

Answer 4

posterior syndesmosis

Question 5

what is the joint classification between the auricular surfaces of the sacrum and the ilium?

Answer 5

anterior synovial joint

Question 6

the articulating surfaces of the ilium and sacrum have which 3 features?

Answer 6

multiplanar, curvy, hyaline cartilage

Question 7

how much does the SIJ move?

Answer 7

small amounts

Question 8

anterior and posterior tilts are considered ______ innominate movements.

Answer 8

symmetrical

Question 9

what happens to the ASIS & pubic symphysis in anterior pelvic tilt?

Answer 9

move inferiorly

Question 10

what happens to the ASIS & pubic symphysis in posterior pelvic tilt?

Answer 10

move superiorly

Question 11

in assymetrical innominate movements, what is anterior tilt known as?

Answer 11

anterior rotation

Question 12

define inflare.

Answer 12

internal rotation of one innominate

Question 13

define outflare.

Answer 13

external rotation of one innominate

Question 14

what happens to the ASIS and PSIS during an upslip and downslip?

Answer 14

they move up or down together, and respectively

Question 15

sacral counternutation is the same as pelvis ____

Answer 15

anterior pelvic tilt

Question 16

sacral nutation is the same as pelvis _____

Answer 16

posterior pelvic tilt

Question 17

what is the sacral motion during forward bending?

Answer 17

sacral nutation first 60 degrees

sacral counternutation after 60 degrees

Question 18

what occurs to the pelvis and sacrum during hip flexion?

Answer 18

pelvis posteiorly rotates

sacrum counternutates at end range

Question 19

what occurs to the pelvis and sacrum during hip extension/backward bending?

Answer 19

pelvis posteriorly rotates

sacrum nutates at end range

Question 20

what does the anterior sacroiliac ligament provide?

Answer 20

compression

Question 21

what are the 2 parts of the long posterior ligament?

Answer 21

superiorly PSIS and inferior sacrum and thoracolumbar fascia

Question 22

what does the dorsal ligament check for?

Answer 22

counternutation

Question 23

what muscles give anterior support to the pubic symphysis?

Answer 23

transversus abdominis, rectus abs, internal obliques, adductor longus

Question 24

what is the normal position of the sacrum in standing?

Answer 24

nutation

Question 25

what structures support the SI joint posteriorly?

Answer 25

thoracolumbar fascia, erector spinae, IT tract, Glut max

Question 26

what does the long dorsal ligament check for?

Answer 26

counternutation

Question 27

where does the long dorsal ligament extend from?

Answer 27

PSIS, sacrum, thoracolumbar fascia

Question 28

what does the sacrotuberous ligament check for?

Answer 28

nutation

Question 29

where does the sacrotuberous ligament extend from?

Answer 29

ITs, PSIS, sacrum, coccyx

Question 30

what does the sacrospinous ligament check for?

Answer 30

nutation

Question 31

where does the sacrospinous ligament extend from?

Answer 31

ischial spine, sacrum, coccyx

Question 32

what is the most impt ligament for the sacoiliac joint?

Answer 32

interosseous ligament

Question 33

name the ligaments that support the pubic symphysis.

Answer 33

superior, inferior, posterior