PLL and ALL Flashcards
vertebral levels that the ALL attaches to
between occiput and S3 inclusive are traditionally indicated
lowest extent of the ALL based on recent studies
L3
believed to form the ALL in the lumbar spine
tendon of the crura of the diaphragm
innervates the ALL
anterior neural plexus formed by fibers from the ventral primary ramus and sympathetic postganglionic fibers from the paravertebral ganglia
function of the ALL
brakes or limits dorsi-flexion or hyperextension of the vertebral column
ossification of the ALL in the lumbar region is called what
Forestiers’s disease
ossification of ALL in the lumbar region is NOW called what
DISH
diffuse idiopathic skeletal hyperostosis
classification of the PLL - vertebral body joint
fibrous (amphiarthrosis) syndesmosis
vertebral levels the PLL will attach to
those b/w C2 and S3 inclusive are traditionally indicated
PLL will attach to what in addition to vertebral bodies
intervertebral disc
newer research suggests what regional variation in the PLL to the vertebral foramen
forms the anterior boundary of the spinal canal
appearance of the PLL along the cervical spine
parallel along its lateral margins
appearance of the PLL in the lumbar spine
hourglass shaped along its lateral margins
innermost layer of the PLL is called
perivertebral ligament
innervates the PLL
posterior neural plexus formed by fibers from the recurrent meningeal nerve/sinus vertebral nerve/sinu-vertebral nerve
function of the PLL
brakes or limits flexion of the vertebral column
ossification of the PLL is most commonly where
cervical spine with 80% incidence
clinical sign of PLL ossification in the cervical spine
loss of hand and finger dexterity
clinical sign of PLL ossification in the lumbar spine
faltering gait
gender, age, and ethnic bias associated with ossification of the PLL
greater in males over 50 and has a higher incidence in the Japanese
at one time ossification of the PLL was an example of what condition
DISH
