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Flashcards in Bones and Joints of Pelvis Deck (25)
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1

What kind of joint is the sacroiliac joint?

synovial joint

2

What kind of joint is the pubic symphysis?

secondary cartilaginous joint

3

What are the three hip bones?

Ilium, ischium, and pubis

4

What landmarks are located on the superior margin of the iliac crest?

ASIS - anterior termination of crest
PSIS - posterior termination of crest

5

What are the name of the three surfaces of the ilium

iliac fossa internally, gluteal surface externally, and sacral surface for the sacroiliac joint

6

Where is the pectineal line?

on the superior surface of the pubis

7

Which group of muscles attach to the ischial tuberosity?

Hamstrings

8

Which part of the ischium delineates the greater and lesser sciatic notch?

ischial spine

9

What is the boundary of obturator foramen?

rami of the pubis and ischium

10

What is the prominent superior surface of the sacrum called?

sacral promontory

11

What is on either side of the sacral promontory?

lateral masses called the alar

12

T/F The greater pelvis is the true pelvis

False, it is the false pelvis as it is part of the posterior abdominal wall

13

What is the boundary of the pelvic inlet?

superior pubic symphasis, pubic crest, pectineal line, arcuate line of ilium, sacroiliac joint, sacral promontory

14

What is the most common pelvic type in 1) female 2) male

1) gynaecoid (50%)
2) android (30%) + anthropoid (20%)

15

T/F Pelvic outlet, unlike the inlet, has consistent shape for both male and female

True, it is diamond shaped, from pubic symphasis to ischial tuberosity then to coccyx

16

Where is the plane of least dimension?

between pelvic inlet and outlet, from S4 to base of pubic symphasis, while passing the ischial spine

17

What are the three sacroiliac ligaments reinforcing the joint capsule?

anterior, posterior and interosseous sacroiliac ligaments

18

Where does the iliolumbar ligament attach?

L5 to the ilium

19

Where does the sacrotuberous ligament attach?

sacrum to the ischial tuberosity

20

Where does the sacrospinous ligament attach?

sacrum to ischial spine

21

Which foramen is sacrospinous ligament directly related to

sciatic foramen, which is delineated by notches, and closed off by ligament

22

What actions can occur at the sacroiliac joint?

nutation - close pelvic inlet, open outlet

counter-nutation - open inlet, close outlet

23

T/F There is a fibrocartilage disc in the pubic symphysis

True, in the centre. Secondary cartilaginous joint has hyaline plate + fibrocartilage in the centre

24

What ligaments are found at the pubic symphysis?

superior pubic ligament above
inferior arcuate ligament below

25

What is the pubic symphysis reinforced by?

criss crossing fibres from oblique abdo muscles + aponeurosis of rectus sheath and adductor longus