bones

Question 1

ilium

Answer 1

ala
body- upper 2/5ths of acetabulum
posteriorly articulates w/sacrum

Question 2

ischium

Answer 2

posterior inferior 2/5th of acetabulum

short superior ramus and inferior ramus form obtorator foramen and articulate with pubis

Question 3

pubis

Answer 3

short body
superior rami- forms anterior 1/5th of acetabulum
inferior rami

Question 4

pubic symphysis

Answer 4

fibrocartilagenous disc links 2 pubic bones

classified as only site of movement in pelvis

Question 5

SI joints

Answer 5

synovial btwn sacrum and ilium
reinforced by the anterior, posterior, and interosseous SI ligaments
additional reinforcement from sacrotuberous ligament

Question 6

movement of SI joints

Answer 6

primary gliding, can be rotary

isterosseous SI and sacrotuberous ligaments resist rotary motion

Question 7

terminal line

Answer 7

aka iliopubic eminence
divides pelvis into:
-major/false pelvis above
-minor/true pelvis below
plane of line is pelvic inlet

Question 8

normal erect position of pelvis

Answer 8

tips 50-60 degrees from horizontal
base of sacrum 4” higher then PS
ASIS and PS lie in same vertical plan

Question 9

female pelvis

Answer 9

shallower major pelvis w/tendency for anterior ends of iliac crests to be everted
shallower wider a minor pelvis w/greater dimensions
everted sciatic tubers
broader sacrum w/less curve
superior aperature more oval
subpubic angle greater

Question 10

4 types of pelves

Answer 10

android
anthropoid
gynecoid
platypelloid

Question 11

android

Answer 11

most common male

heart shaped pelvic inlet

Question 12

anthopod

Answer 12

2nd most common male pelvis

exaggerated ant/post inlet

Question 13

gynecoid

Answer 13

most common female pelvis

slightly oval shaped pelvic inlet

Question 14

platypelloid

Answer 14

least common in both sexes

exaggerated transverse inlet diameter

Question 15

superior aperture pelvic diameters

Answer 15

true conjugate
diagonal conjugate
transverse
oblique

Question 16

true conjugate

Answer 16

from sacrovertebral angle to superior margin of symphysis

Question 17

diagonal conjugate

Answer 17

from sacrovertebral angle to inferior margin of symphisis

Question 18

transverse- superior aperture

Answer 18

greatest width of superior aperature

Question 19

oblique

Answer 19

from SI joint to contralateral iliopectineal eminence

Question 20

inferior aperture pelvic diameters

Answer 20

transverse
anterior sagittal
posterior sagittal

Question 21

transverse- inferior aperature

Answer 21

btwn inner surfaces of ischial tuberosities

Question 22

anterior sagittal

Answer 22

from transverse diameter to PS

Question 23

posterior sagittal

Answer 23

from transverse diameter to sacrococcygeal junction