Pelvis Flashcards
What bones is pelvis made of?
2 os coxae (hip bones)
sacrum
What bones are part of os coxae?
ilium
ischium
pubis
What seperate the 2 os coxae in anterior?
pubis symphysis
Where is the acetabulum?
the intersection of body of lium, body of ischium, superior ramus of pelvis
What is the acetabulum?
the place for articulation with femur
What is acetabulum equivalent to?
glenoid fossa in pectoral girdle
What is iliac fossa part of?
the wing of ilium
Where is the iliac crest? Where does it cross?
top of the iliac fossa
L4
What does iliac crest form anteriorly? posteriorly
ASIS
PSIS
What is ASIS attachment site for?
inguinal ligament
Where is the greater sciatic notch?
at the PIIS
What is the transition of the body and ala (wing) of pelvis?
arcuate line
Where is the pecten?
on top of the superior ramus of pubis
What does arcuate line and pecten form?
linea terminalis
What is the boundary of greater/lesser sciatic notch?
ischial spine
Tell each part number of ischium. Number 11->14
Ischial tuberosity
Ischial Spine
Lesser sciatic notch
Ramus of ischium
How many joints articulation in the pelvis?
2 posteriorly with sacrum
1 anterior at the pubic symphysis
Where does obturator nerve and vessels travel in/out?
obturator canal
What is the pelvic inlet?
the plane surface that define the boundary between abdominal cavity and pelvic cavity
Border of pelvic inlet? (anterior, posterior, lateral)
Anterior: top of pubis
Posterior: sacral promentory
Lateral: iliopectineal line
Where is the pelvic major (false pelvis)? pelvic minor (true pelvis)?
above pelvic inlet
below pelvic inlet
Border of Pelvis major? (ant, post, lateral)
Ant: abdominal wall
Post: L5-S1
Lateral: iliac fossae
Border of pelvic major? (ant, post., infer., lateral)
Ant: pubis
Post: sacrum & cocyx
Infer: pelvic diaphragm
Lateral: obturator int
Border of pelvic outlet (inferior pelvic aperture)?
inferior pubic remi
sacrotuberous lig
ischial tuberosity
pubic symphysis
cocyx
What is female pelvis different from male?
wider pubic arch with shallower subpubic angle
wider pelvic inlet
thinner bone in iliac foassae
What are two joints in vertebral column of pelvis?
L5:sacrum
sacrum:cocyx
What type of joints in L5:sacrum vertebrae?
symphysis btw bodies
plane joints btw arches
What joints are there in sacrum:cocyx?
only symphysis and no plane joints
why there are no plane joints btw sacrum:cocyx?
because there are no s4 and s5 in sacral vertebrae
what ligament does sacrum:cocyx have? Where is it come from?
sacrococcygeal lig
the continuation of anterior/posterior longitudal ligament into cocyx
What are pelvic joints?
anterior joints: pubic symphysis
posterior joints: 2 sacroiliac joints
What is the sacroiliac joint?
where is the os coxae articulate with sacrum
What are the ligament in pubic symphysis?
superior pubic lig
arcuate pubic lig
Where is the superior pubic lig? arcuate pubic lig?
superior pubic tubercle
inferior pubic arch
What ligaments are there in sacroiliac joint?
ventral/ant sacroiliac lig
interosseous SI lig
Post SI lig
iliolumbar lig
sacrotuberous ligs
sacrospinous ligs
What does ventral/ant and dorsal/post SI lig do?
reinforce the joints btw iliac and sacrum
What is the strongest ligament in the body? where is it
interosseous SI lig
between os coxae and sacrum
What is the iliolumbar lig?
connecting the transverse process of L5 to iliac fossae
What does sacrotuberous lig do?
connect posterior sacrum to ischial tuberosity
What does sacrobspinous ligs do?
connect anterior sacrum to ischial
Where does sacral plexus nerve exit?
greater sciatic foramen
Where does pudendal nerve and obturator internus enter?
less sciatic foramen
What exit through greater sciatic foramen?
sacral plexus nerve
What reenter lesser sciatic foramen?
pudendal nerve and obturator internus
