Facet sx & lumbar stensosis Flashcards
___-___% of LBP cames from Facet sx
15-40%
In athletes, facet sx comes from what movements
repetitive compression & rotational forces to the extended spine
What would the Hx look like for someone with facet sx
prior hx of LBP
50+ yo
absence of leg pn or m spasm
facet jt is innervated by ____
medial branch of the dorsal ramus
What structures are innervated by the medial branch of the dorsal ramus
facet jt multifidus interspinales intertransversii mediales M interspinous lig ligamentum flavum
Nociceptive N’s are activated by ___ & ___
local pressure & capsular stretch
facet jt resists ___ & ___ forces
axial and shearing forces
absorbs compressive forces in ext
___: is asymmetry of the jt
MC location:____
tropism
L5-S1 (sagittal & coronal)
___ form: acts on N endings through vasodilation –> gets WBC in
Substance P
releases histamine
_____ enzyme hydrolyzes phospholipids –> into arachiodonic acid = inflammation and prolonged pn
Phospholipase A2
When do people with facet sx typically feel pain
morning/ prolonged rest
_____: line along the inferior surface of the TP, AP and across the jt in an xray
Hadley’s S curve line
____ measurement in x rays: endplate line from posterior body to the pt of intersection
( should be equal)
Van Akkerveeken’s measurement
___ is the MCC for back surgery
spinal stenosis (pt over 50)
What is congenital stenosis
narrow canal–> short pedicles, thickened lamina & facet or excessive lordotic curve
