L-spine Flashcards
(16 cards)
Structures AP
T12 to sacrum
Bilateral SI joints
CR and CP AP
CR: perp
CP: LCM at midline
No rotation AP
Main: sp aligned midline with VBs, equidistant from pedicles
Sacrum centered within inlet of pelvis
No waist F/E
Knee and hip flexion performed
IV disk spaces open except L5-S1
VB with no distortion
Minimal foreshortening of sacrum
Structures Lat
T12 to sacrum including SP posteriorly
CR and CP lat
Cr: perp
CP: level of L3 at mid-ancillary plane
No rotation lat
Main: posterior margins of VB SI ant/post
Open IVF
Can use posterior ribs and pelvic ala
No tilt lat
Main: open IV joint spaces btwn VB SI sup/inferior
Respiration lat
On suspended
See L1 inferior to diaphragm
Structures L-spot
L5 and upper sacrum
CR and CP spot
CR: perp/5 degrees
CP: L5-S1 lumbosacral disk space
No rotation spot
Main goal: posterior margin of L5 vertebra SI ant/post=open IVF
L5 pedicles SI and in profile
Greater sciatic notches nearly SI ant/post
BTP/Tilt spot
Main: lumbosacral IV space open
L5 pedicles SI sup/inf
Pelvic alae nearly SI sup/inf
Structures oblq
T12 to sacrum including SI joints
Z joints are open
CR and CP oblq
CR:perp
CP: level of L3 at mid spine
Good obliquity
Main: z joints open and in straight line
Pedicles halfway btwn mid VB and lateral border
