4: Pelvic Osteology Clinical Correlations Flashcards
Spondylosis
DJD with calcification of edges of vertebral body -> localized pain and stiffness
Spondylolysis
Separation of vertebral arch from vertebral body
Spondylolisthesis
Anterior displacement of vertebral body on inferior vertebral segment
Superior pelvic aperture
Pelvic inlet, exists at the pelvic brim
Inferior pelvic aperture
Pelvic outlet, bound by inferior edge of pubic symphysis
Male pelvis vs female
Male: thicker, heavier, narrow lesser pelvis, android shaped, narrow pubic arch, round obturator foramen
Female: thinner, lighter, shallow greater pelvis, wide lesser pelvis, gynecoid shaped, large pelvic outlet, oval-shaped obturator foramen
Four pelvic shapes
Android: classic male
Gynecoid: classic female
Anthropoid: elongated A/P
Platypelloid: elongated laterally
Why do pelvic fractures usually involve multiple fractures
The pelvis is a bony ring, hard to break in just one place
Most common fracture spots for a pelvic fracture
Superior and inferior pubic rami on both sides
Two ligaments that produce the greater and lesser sciatic foramen
Sacrotuberous L, sacrospinous L
Four points of the perineum
Pubic symphysis, coccyx, two ischial tuberosities
Two triangles of the perineum
Urogenital triangle, anal triangle
Perineal body
Irregular fibromuscular mass in midline between anal canal and perineal membrane, sometimes classified as a central tendon of the pelvis
How is the deep transverse perineal muscle in the female described?
A smooth muscular mass along posterior edge of the perineal membrane
What is different between female and male deep transverse perineal muscles?
Female is smooth muscle, male is skeletal
