pelvis and sacrum

Question 1

Greater Pelvis

Answer 1

wings of ilium and the sacrum

-pelvis in men larger and denser

Question 2

lesser pelvis

Answer 2

• true part of the pelvis, tiny space where viscera (bladder, reproductive organs etc.) are located
• the pelvis is tilted

Question 3

sacrum

Answer 3

• 5 fused vertebrae that form 1 solid bone
• PROMONTARY OF SACRUM: most superior surface on the body of the first sacral vertebrae*
• coccyx located inferiorly to it
• superior articular facet posteriorly
• wings (ala) on each side of the base, helps to form sacroiliac joint
• lateral crest is the fusion of transverse processes, ligaments and muscles attach here
• sacral hiatus covered by thick connective tissue
• in males stick in more, more tilted backwards in women

Question 4

pelvic brim

Question 5

hip bone

Answer 5

contains : ischium, ilium, pubis, acetabulum, ASIS (anterior superior iliac spine) : bony projection of iliac bone, obturator foramen

Question 6

acetabulum

Answer 6

socket of the hipbone, where the head of the femur fits

Question 7

ilium

Answer 7

• superior, flattened, fan-shaped part of the hip bone
• ala of the ilium: spread of the fan
• body of the ilium forms the superior part of the acetabulum

Question 8

ischium

Answer 8

• lower and back part of the hip bone

- has a body and a ramus

Question 9

pubis

Answer 9

• located in front of the pelvic girdle
• pubic symphysis : a secondary cartilaginous joint between the left and right superior rami of the pubis of the hip bones
• has two projections : superiorly and inferiorly (ramus)

Question 10

obturator foramen

Answer 10

• large opening in the hip bone between the pubis and the ischium
• covered by membrane
• gives attachments to muscles, and lets nerves pass through
• circular in men, more oval shaped in women

Question 11

greater and lesser sciatic notch

Answer 11

• divided by ischial spine

- parts of ligaments will attach to form a hole on these notches

Question 12

auricular surface

Answer 12

• auricular because of resemblance to the ear
• articulates with the lateral border of the sacrum
• covered in highland cartilage

Question 13

subpubic angles/arch of male and female pelvis

Answer 13

-smaller angle in males than females

Question 14

spondylolithesis

Answer 14

vertebral column slips anteriorly

• body of L5 can protrude and falls off of S1
• nerve irritation, leads to extremely unstable joint