Final - Part 3 pelvis

what are the bones which form the pelvis

R and L hip bones

sacrum

coccyx

what makes up a hip bone

ilium, ischium, pubis

in anatomical position, the pelvis is tilted so the ASIS and the upper margin of the pubic symphysis lie in the same _____ plane

vertical

in anatomical position, the pelvis is tilted so the tip of the coccyx and the upper margin of the pubic symphysis lie in the same ___ plane

horizontal

what are the boundaries of the pelvic inlet

sacral promontory, sacral ala, arcuate line, pubic pecten, pubic crest

what do the boundaries of the pelvic inlet form

pelvic brim/linea terminalis

the pelvis is divided by the pelvic brim. What lies above?

greater (false) pelvis

what is the function of the greater (false) pelvis

support abdominal viscera

attachment for muscles of locomotion

what is the shape of the inferior aperture of the pelvis? what is it known as?

diamond

pelvic outlet

what are the boundaries of the pelvic outlet

pubic symphysis

ischiopubic rami

ischial tuberosities

sacrotuberous lig

tip of coccyx

what makes an anthropoid pelvis? Who typically has them?

long a-p diameter, short transverse

some males, 20% females

what makes a platypelloid pelvis? Is it rare for common in males? what % of females have it?

short a-p, wide transverse

rare

2%

what makes an android pelvis? who is it in?

heart-shaped inlet

most males, 30% females

what makes a gynecoid pelvis? who is it in?

ovoid or round inlet

50% female

no males

what pelvic type gives difficult birth and c-sections are needed

platypelloid

what pelvic type is the ideal type for giving birth

gynecoid

what is the usual shape of the male pelvic inlet?

heart

who has larger pelvic cavity and outlet

female

who has more flaring ilia

male

is the subpubic angle larger or smaller in females

larger

what is the greater sciatic notch for females like

broad, shallow

who has a shorter and wider sacrum

female

At what level is the lumbosacral joint? Does it contain an IVD?

L5-sacrum

yes

what is the least mobile joint of the body which becomes less mobile with age

SI joint

the pubic symphysis joint in between what? what does it contain?

two pubic bodies

interpubic disc

what hormone causes joints of the pelvis to become loose during pregnancy

relaxin

which sciatic foramen lies above the pelvic floor

greater

what structures bound the lesser sciatic foramen

lesser sciatic notch, sacrotuberous lig, sacrospinous lig

which structures pass through both the greater and lesser sciatic foramen

pudendal nerve

internal pudendal vessels

nerve to obturator internus