lec 5 lumbar spine, sacrum, coccyx Flashcards
size of vertebral bodies get ___ as load increases
larger
where do lumbar vertebrae become curved
L4/5
good level to do spinal tab or lumbar puncture
L3/4
boundaries of intervertebral foramen
superior and inferior: pedicles
anterior: vertebral body and intervertebral disc
posterior: zygopophysealfacet joints
what does posterior longitudinal ligament do
reinforces discs posteriorly
stenosis
narrowing of vertebral canal
spondylosis
any degenerative osteoarthritic change in spine that results in impingement upon contents of spinal canal or intervertebral foramen
spondylolysis
separation b/t superior and inferior articular processes
arch separated from body and pedicle
weakened anterior longitudinal ligament
spondylolisthesis
fibrous tissue doesn’t hold together
sacrilization of L5 vertebrae
L5 fused with sacrum
lumbarization of S1 segment
S1 is within lumbar region
spina bifida result of
neural tube defects and problems in spine development
where are apex and base of sacrum
inferiorly and superiorly
where does ventral surface of sacrum face
anteroinferiorly
where does dorsal surface of sacrum face
posterosuperiorly
