Lumbar spine Flashcards
Reason why lumbar spine is more susceptible to disc herniation?
Narrowing of posterior longitudinal ligament
Comparison of posterior longitudinal ligament at L1 and at L4-5?
Is 1/2 the width at L4-5 than at L1
Location of where spinal cord terminates?
L1-2
At L4 and L5 which nerve root exits the intervertebral foramen?
If there is a posterolateral disc herniation between L4/L5 which nerve root will be compressed?
- L4
- Is L5
This is because the nerve roots exit below the corresponding vertebre but ABOVE the intervertebral disc.
Origin of iliopsoas m?
T12-L5 vertebral bodies
What are the Erector spinae muscles (lateral to medial?)?
Iliocostalis, Longissimus, Spinalis (I Love Spine)
Level of iliac crest
L4-L5
T10 dermatome at umbilicus is anterior to which IV disc?
L3-L4
Asymetry of the facet joint angle
Facet trophism–predisposes to early degenerative changes
Facets in coronal plane instead of sagital
What plane are lumbar facets in?
Saggital BM
remeber: BUM, BUL, BM
What is the name of th test used for psoas?
THOMAS!!!!
what fails to fuse in spina bifida
lamina of vertebra
OMT findings for scoliosis
+ Thomas test for psoas
Long leg: 2 things
Only thing to know is PIRIFORMIS hypertonic
Sacral ILA is posterior/Inferior
Short leg: everything else
SB lower
Anterior Inominant so remember findings (Inf ASIS Sup PSIS)
what view on XR do you need to see spondylolysis
oblique, since there you can see pars interarticularis fracture “scotty dog collar”
there is no slippage
degenerative changes in intervertebral disc and ankylosing of adjacent vertebral bodie
spondylosis
what motion makes spondylolisthesis worse
extension
Patient can’t walk on heels
L5: fibular
Can’t walk on toes
S1: Tibial
Pain is relieved by squatting
central spinal stenosis
Decreased patella reflex
L3/L4 impingement
Decreased Achilies Tendon Reflex
S1
Radiology for spinal stenosis?
Osteophytes and decreased IV disc space, foraminal narrowing on oblique views
Anterior displacement of one vertebrae in relation to one below due to fractures in the pars interarticularis
What is spondylolisthesis?
Defect of pars interarticularis WITHOUT anterior displacement of vertebral body
What is spondylolysis?
Radiology for spondylolysis?
Scotty dog on oblique view–fracture of pars interarticularis
What is spondylosis?
Radiological term for degenerative changes within IV disc and ankylosing of adjacent vertebral bodie
