Pelvic And Perineal Osteology Flashcards
What are the components that make up the pelvic brim?
Arcuate line on the ilium
Pectin pubis on the superior pubic ramus
Linea terminalis (coxal contribution to the pelvic brim)
Sacral ala
What is spondylosis?
A degenerative joint disease which involves calcification of the edges of the vertebral body and can cause pain and stiffness
What is sponylolysis?
Separation of the vertebra arch from the vertebral body
What is spondylolisthesis?
Anterior displacement of the vertebral body on the inferior vertebral segment
Can occur secondarily to spondylolysis
What is the superior pelvic aperture (pelvic inlet)?
Exists at the pelvic brim between the greater and lesser pelvis and is formed by the sacral promontory, superior edge of the sacral ala, arcuate line of the ilium , pectin pubis, posterior edge of the pubic crest and superior edge of pubic symphysis
What is the inferior pelvic aperture (pelvic outlet)?
Bound by the inferior edge of the pubic symphysis, inferior pubic and ischial rami, ischial tuberososities, sacrotuberous Ls and coccyx
What is the pelvic canal?
The passage between the two apertures
Describe the male pelvis
Males have a thicker heavier pelvis, deeper greater pelvis, narrower and deeper lesser pelvis, Android pelvic inlet, small pelvic outlet, narrow pubic arch, round obturator foremen and large acetabulum
Describe a female pelvis
Have thinner lighter pelvis, a shallow greater pelvis, wide and shallow lesser pelvis, gynecoid pelvic inlet, large pelvic outlet, wide pubic arch, oval shaped obturator foramen and small acetabulum
What are the different pelvic shapes?
Android (classically male)
Gynecoid (classically female)
Anthropoid (elongated anterior to posterior)
Platypelloid (elongated laterally)
Pelvic diameters (conjugated are what?
Important measurements obstretically to determine the capacity of a female to bear a child
Describe pelvic fractures or crush fractures
Almost always involve multiple fractures given that the articulated pelvis is a bony ring and therefore difficult to break in only one place
The superior and inferior pubic rami are often broken on both sides as a result of this injury
The bony pelvis includes which structures?
The paired coxal bones, sacrum and coccyx
Has a superior and inferior pelvic aperture
The pelvic girdle describes what?
The paired coxal bones which are joined anteriorly to the pubic symphysis
What is the pelvis or pelvic cavity?
The region of the trunk inferoposterior to the abdominal, between the pelvic brim and pelvic diaphragm
