midterm line drawing Flashcards
Pituitary fossa size
sella Tursica
Pituitary fossa size
sella Tursica
Sella Tursica AP measurement
5-16
Sella Tursica verticla measurement
4-12
basilar angle normal
123-152
basilar angle indicates
platybasia
McGregor’s Line aka
Basal line
McGregor’s Line line
hard palate to inferior occiput
McGregor’s line normal
dens
McGregor’s line indicates
bsilar impression
Palatoocipital Line AKA
Chamberlain’s Line
hard palate to opisthion
Chamberlain’s Line
Chamberlain’s indicates
basilar impression
McCrae indicates…
platybasia
AO joint dislocation or joint fracture
McCrae normal?
inferior margin of occiput at or below
apex through anterior 1/4
Height index of Klaus
Digrastic lines
digastric grooves, measure to dens apex
Digastric indicates
basilar impression
adi normal
1-3 adults 1-5 children
ADI increased by
Trauma Trisomy 21 Occipitalization Pharyngeal infections (Grisel's disease) Seronegative arthropathies
Contour lines”
anterior body
posterior body (George’s)
Spinolaminal
Posterior spinous
Canal sizes
16 C1
14 C2
>13 C3-C7
pavlov’s ratio
canal/body ratio
pavlov’s ratio indicate?
furguson’s is __% less than cobb
25%
Lumbosacral angle normal
25-67 (not associated w/ increased spondylo!)
lumbar disc angle measurements
8 10 12 14 14
gravity line normal
up to 10 mm anterior to sacral promontory
McNab line
superior articular process below inferior end plate
McNab indicates
facet pathology
inferior TP down articular process
Hadley’s S curve
Hadley’s indicates
facet subluxation
Taillard
% estimation of anterior slippage
amount of anterior slippage in mm
Millimetric
Einstein’s AKA
Lumbar Canal
Intercrestal line through upper half of L4
L4 DDD