anatomy of pelvic bones Flashcards
bony pelvis consists of what structures?
- 2 hip bones
- sacrum
- coccyx
each hip bone is a fusion between?
- ilium
- ischium
- pubis
complete ossification does not happen until adulthood
iliac fossa is the attachment site for which muscle?
- illiacus muscle
ASIS anterior end of what?
- iliac crest
-> bony landmark
iliac crest runs from?
- ASIS to PSIS
ilium contains what 4 structures?
- iliac crest
- ASIS
- PSIS
- iliac fossa
ischium contains what 3 structures?
- ischiopubic ramus
- ischial spine
- ischial tuberosity - posterior parts feel when you sit down
pubis anteriorly contains what structures?
- ischiopubic ramus
- superior pubic ramus
- pubic tubercle
- pubic arch (connection between ischiopubic ramus)
- sub-pubic angle (inferior angle to pubic arch)
hip bones form a ring closed anteriorly and posteriorly by what?
anteriorly - pubic symphysis
posteriorly - sacrum
pelvic inlet is the entry for what?
- pelvic cavity proper from abdominal cavity
-> known as pelvic rim
pelvic inlet is made up of what structures?
- sacral promontory
- ilium
- superior pubic ramus
- pubic symphysis
pelvic outlet is made up of what structures?
- pubic symphysis
- ischiopubic ramus
- ischial tuberosities
- sacrotuberous ligaments
- coccyx
what is pelvic outlet?
- inferior aspect of pelvic cavity
what is pelvic cavity?
- space lying within bony pelvis
- continuous w abdominal cavity above
- lies between pelvic inlet and pelvic floor
- contains pelvic organs as well as supporting tissues
the inguinal ligament attaches between the ASIS and the ?
- pubic tubercle
ischial spines are palpable on vaginal examination at what clock positions?
- 4
- 8 o’clock
list some palpable surface landmarks of the pelvis?
- ASIS
- pubic symphysis
- pubic tubercle
- iliac crest - posterior
- sacrum - posterior
- PSIS - posterior
- coccyx - posterior
- ischial tuberosity - posterior
study bony pelvis
study
study
name 3 joints of pelvis?
- hip joint (synovial) - between head of femur and acetabulum
- pubic symphysis (secondary cartilaginous) - post natal and pregnancy pain here
- sacroiliac joint (synovial but described as synovial ant and syndesmosis posteriorly)
function of SI joint
- transfer weight from axial skeleton to hip bones
large number of ligaments of pelvis what are 2 most important ones?
- sacrotuberous ligament
- sacrospinous ligament