Savarese chapter 4 (lumbars) Flashcards
Why is the lumbar spine more susceptible to disc herniations?
The posterior longitudinal ligament is narrower
Thoracic and lumbar nerve roots exit the intervertebral foramina
Below their corresponding vertebrae, and above the intervertebral disc(lumbars)
Iliopsoas origin, insertion, and action
Origin: T12-L5 vertebral bodies
Insert: Lesser trochanter of the femur
Action: Primary flexor of the hip
What is the primary flexor of the hip?
Iliopsoas
Most common anomaly of the lumbar spine
Facet (Zygopophyseal) Tropism
asymmetry of the facet joint angles
Main motion of the lumbar spine
Flexion/extension
Lumbosacral (ferguson’s) angle
The intersection of a horizontal line and the line of inclination of the sacrum
Normally 25-35 degrees
An increase in Ferguson’s angle causes
a shear stress to be placed on the lumbosacral joint, causing low back pain
Psoas syndrome findings
Non-neutral dysfunction of L1 or L2
+ pelvic shift test to the CL side
sacral dysfunction about an oblique axis
CL piriformis spasm
Spinal stenosis pain is worsened by
extension
Herniated disc pain is worsened by
flexion
Spondylolisthesis
anterior displacement of one vertebrae in relation to the one below, usually due to fracture of the pars interarticularis
Spondylolysis
A defect usually of the pars interarticularis w/o anterior displacement of the vertebral body
Collar on the scottie dog!
Spondylosis
Degenerative changes within the intervertebral disc and ankylosing of the adjacent vertebral bodies
Cauda equina symptoms
saddle anesthesia
decreased deep tendon reflexes
decreased rectal sphincter tone
loss of bowel and bladder control
