7b. Trauma Evaluation - Spine Flashcards
what should the predental space be in adults
no more than 3mm
what should the predental space be in children
no more than 5mm
what should C2-3 subluxation be in adults
no more 3mm
what should C2-3 subluxation be in children
no more than 5mm
what should the prevertebral soft tissue measurement in adults at C3
up to 7mm
what should the prevertebral soft tissue measurement in adults at C7
21mm
what should the prevertebral soft tissue measurement in children
1/2 to 2/3 of AP vertebral body
what is the predental space
space infront of peg ant portion of C1
what are the 4 contour lines
AVL
PVL
SLL
PSP
what is the AVL contour line
anterior cortical surfaces of vertebral bodies
what is the PVL contour line
posterior cortical surfaces of vertebral bodies
anterior margin of spinal canal
what is the SLL contour line
spino laminar line
posterior boundary of spinal canal
what is the PSP contour line
posterior spinous process
what are the 4 things to check in a lateral spine xray
alignment = vert body rotation, loss of spinal curves and disrupted contour lines
bones = pathologies
cartilage = predental space, disc spaces, facet joints
soft tissues = prevertebral space
what are the 4 things to check in a AP spine xray
Alignment = Spinous processes line and pedicle lines
Bones = where, which, pathologies?
cartilage = disk space and unconvertable joints
soft tissue = tracheal deviation
what are the 3 osteoligamentous columns of the spine
Anterior
middle
posterior
where is the anterior osteoligamentous columns of the spine
AVL, anterior 2/3 of vertebral body and annulus fibrosis
where is the posterior osteoligamentous columns of the spine
posterior bony complex (posterior arch)
pedicles, laminae, posterior ligamentous complex (supraspinatus ligament, capsule and ligamentum flavum)
where is the middle osteoligamentous columns of the spine
PVL, posterior 1/3 of vertebral body and annulus fibrosis
is it a stable fracture when only one column is involved
yes
is it a stable fracture when 2 non adjacent columns are involved
yes
is it a stable fracture when 3 columns are involved
no