Lecture 17 - Bones and joints of pelvis Flashcards Preview

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Flashcards in Lecture 17 - Bones and joints of pelvis Deck (21):
1

what are the bony features of the ilium?

iliac crest superiorly

ASIS, PSIS

Gluteal surface (with lines) - technically part of the lower limb


2

what are the bony features of the pubis?

superior pubic ramus
inferior ramus

3

how many ramus on the ishium?

one- joins with eh infreior pubic ramus

4

During development there is a _____ ________ that separates the three bony contributions to the acetabulum

tri-radiate cartilage

5

The superior surface of the sacrum has a prominent inferior margin centrally called the ..

sacral promontary

6

The sacrum has _ fused vertebrae

5

7

What seprates the greater and lesser pelvis?

iliopectineal line

8

above the iliopectineal line is the ...

flase (greater) pevlis


below is the true (lesser) pelvis

9

The true pelvis extends from the ...

pelvic inlet to outlet

10

Define the pelvic inlet:

From front to back

pubic symphysis

pubic crest

pectineal line of the pubic

arcuate line of ilium

crosses the sacro-iliac joint

ant. margin of alar

sacral promontery

11

pelvic inlet is the _____diamter (ina female)

pelvic inlet is the widest diamter (ina female)

12

What are the definiting features of the male pelvis?

Thick and heavy

inlet shape: heart shaped

Greater sciatic notch:
narrow inverted

subpubic arch: acute angle

acetabulum: large

obturateor: round

13

What are the definiting features of the female pelvis?

thin and light

inlet shape: transverse oval

Greater sciatic notch:
almost 90 degrees

subpubic arch: obtuse angle

acetabulum: small

obturateor: oval

14

pelvic outlet is ___ shaped

diamond

15

The narrowest part of the pelvis is called the

plane of least dimensions (usually circular)

16

THe sacro-iliac joint is where?

posterior part of the alar of the sacrum - similar shaped surface on the ilium

17

what ligaemnts support the sacro-iliac joint?

sacro-iliac ligament
interosseus sacro-iliac ligament

18

what are the accessory igaments of the sacroiliac joint?

iliolumbar

sacro-tuberous (to ishial tuberosity) and sacro-spinous (to ishial spine) ligs.

19

notation means..

The sacrum nodding forwards - increases dimension of the4 pelvic outlet

20

counternutation menas

the top of the sacrum moves back - increases size of the pubic inlet

21

pubic symphysis is what kind of joint?

Secondary cartilaginous