Pelvic Girdle

Question 1

pelvic girdle?

Answer 1

R & L hip

Question 2

Pelvis?

Answer 2

pelvic girdle + sacrum + coccyx

Question 3

7 joints of pelvic girdle?

Answer 3

1. Lumbarsacral
   2 and 3. Sacroiliac (2)
2. Sacrococcygeal
3. Intercoccygeal
4. Symphysis Pubis
5. Hip

Question 4

Sacroiliac joint type? Cartilage type?

Answer 4

ilium + sacrum

synovial planar = slide & glide

FISH
Ilium = fibrocartilage
sacrum = hyaline cartilage

Question 5

5 ligaments of sacroiliac joint?

Answer 5

1. interosseous: posterior side. fills space between sacrum & iliac tuberosity
2. Posterior sacroiliac: covers interosseous. level layers
3. Anterior sacroiliac: anterior aspect
4. Sacrotuberous: SP > Ischial tuberosity
5. Sacrospinous: SP > Ischial spine

4&5 hold distal sacrum in place against weight bearing forces

Question 6

Self locking mechanism?

Answer 6

when sacrum moves posteriorly, PSIS moves medially like a clamp

Main ligaments: interosseous & posterior sacroiliac

Accessory: iliolumbar ligaments

Question 7

Sacrococcygeal joint type?

Answer 7

sacrum + coccyx
synovial planar OR symphysis (secondary cartilaginous) synarthoris joint
*depends on age

Question 8

Intercoccygeal joint type?

Answer 8

Synarthrosis
* motion will increase during pregnancy

Question 9

Pubic symphysis joint type?

Answer 9

secondary cartilaginous (amphiarthrosis symphysis )