Low Back Pathologies Flashcards
characteristics of multiple myeloma
primary malignant tumor
in bone marrow
usually in older people
incidence of spinal metastases
most common spine tumors
2nd most serious spine pathology
most commonly in the vertebral body (usually anterior)
spine metastases are usually from what cancers
breast
lung
kidney
GI
thyroid
most common areas for metastasis
lung
liver
bone
spinal malignancy is usually in what region
thoracic
then lumbar
rarely cervical
pathogenesis of spine malignancy
healthy bone replaced by tumor
clinical manifestations fo spinal malignancy
severe spine pain
myelopathy S&S
bony alterations
cancer S&S
what vertebral segment is aligned with the end of the spinal cord
L1-L2
etiology of lumbar spinal cord myelopathy
most common = b/c of degenerative changes
malignancy = 20%
rare central disc herniation
how can degenerative changes cause myelopathy
lax/buckling of ligamentum flavum
ARDC/ARJC with arthritis/herniation
vertebral body collapse/fx
pathological instability
specific S&S of lumbar SC myelopathy
extreme spine pain
mechanical reproduction
multi segment nukmbness/weakness
spastic/retentive bladder
hyperactive DTRs
+ UMN tests
hypoactive superficial reflexes
what is cauda equina syndrome
compression to some degree on one of the 20 soinal nn that originate from the end of the spinal cord or conus medullaris
can be acute or chronic
below L1/L2 segment
prevalence of cauda equina
rare
2% of lumbar ARDC
etiology of cauda equina syndrome
1 = mid to lower lumbar ARDC
2= degenerative spinal changes/malignancy
risk factors for cauda equina syndrome
mid to lower lumbar:
-persistent IDD, central > postlat
-central stenosis
-surgery
over 50
obesity
Hx indicating cauda equina
LBP
bowel/bladder incontinence
sex dysfunction
cancer S&S possible