Sacroilliac Joint

Question 1

T/ F

The iliac joint surfaces are formed from hyaline cartilage

Answer 1

False
it is formed from fibrocartilage
- the sacral surfaces are formed from hyaline cartilage

Question 2

T/F

The hyaline cartilage is 3-5x thicker than the fibrocartilage

Answer 2

true

Question 3

what type of joint is the sacroiliac

Answer 3

a synovial articulation

- diarthrosis

Question 4

T/F
the anterior sacral ligament (ASL) is an anterior inferior thickening of the fibrous capsule and is one of the strongest ligaments compared to the rest of the SI ligaments

Answer 4

False all is true except it being strong

- it is relatively weak and thin compared to the others

Question 5

Which short ligament is located deep on the dorsal S/I and forms the major connection between the sacrum and the inominate

Answer 5

the interosseous ligament

Question 6

T/F
in the dorsal ligament (long ligament) appears to slacken with counternutation (posterior motion) whereas this ligament tautness with sacral nutation (anterior motion)

Answer 6

False

- the ligament slackens with anterior motion and tautness with posterior motion

Question 7

which ligament is deep to the sacrotuberous ligament

Answer 7

Sacrospinous ligament

Question 8

T/F

the sacrospinous ligament stabilizes against nutation of the sacrum

Answer 8

True

Question 9

T/F
the lower border of the sacrospinous ligament continues with the biceps femurs tendon which the ligament can affect the hamstrings

Answer 9

False

the sacrotuberous ligament will make the statement correct

Question 10

T/F

the sacrotuberous ligament counteracts against nutation of the sacrum

Answer 10

true

Question 11

In the pubic symphysis, contains a ____ disc and the bone surfaces of the joint is covered by ____

Answer 11

• fibrocartilaginous

- hyaline cartilage

Question 12

how many muscles attach directly to the sacrum and/or innominate and what are these muscles primarily function

Answer 12

35

- to stabilize the SI joint rather than moving them

Question 13

which muscle is primarily functions is to produce external rotation and abduction of the femur

Answer 13

• Piriformis

Question 14

what is the piriformis distal attachment

Answer 14

• medial portion of the greater trochanter

Question 15

Name the pelvic floor muscles

Answer 15

• levator ani
• pubococcygeus
• puborectalis
• iliococcygeus

Question 16

What type of support does the pelvic floor muscle provide

Answer 16

• increase intra-abdominal pressure
• provide rectal support during defecation
• inhibit bladder activity
• support pelvic organs
• assist in lumbopelvic stability

Question 17

T/F
in the Chiropractic model of biomechanics , the sacrum rotates aroun two oblique axes and the in nominates are capable of rotating anteriorly and posterior

Answer 17

False

- that is the osteopathic model

Question 18

define the chiropractic model of biomechanics

Answer 18

as one innominate flexes, the ipsilateral sacral base moves anterior and inferior , and as the other innominate extends, the sacral base on that side moves posterior and superior