,Which ligament runs vertically along the posterior aspect of the vertebral bodies? - Answer: Posterior
Longitudinal Ligament (Begins to narrow at lumbar region)
Why is the lumbar spine more susceptible to disc herniations? - Answer: Narrowing of Posterior
Longitudinal Ligament
In the thoracic and lumbar regions, the nerve root exits where in relation to the corresponding
vertebrae? - Answer: Below
Where does the spinal cord usually terminate? - Answer: L1-L2
Due to the termination of the spinal cord, where do the lumbar nerve roots exit in relation to the
intervertebral disc? - Answer: Above
A pelvic side shift usually indicates what? - Answer: Iliopsoas dysfunction
A positive Thomas test indicates what? - Answer: Iliopsoas dysfunction
What landmark is used to locate the L4-L5 intervertebral disc? - Answer: Iliac Crest
What is the most common anomaly in the lumbar region? - Answer: Zygopophyseal Facet Trophism
(predisposes to early degenerative changes)
What is it called when one or both transverse processes of L5 articulate with the sacrum? - Answer:
Sacralization
What is it called when there is a failure of S1 to fuse with the other sacral segments? - Answer:
Lumbarization
A defect in the closure of the lamina of the vertebral segment is called: - Answer: Spina Bifida
,No herniation through the defect, course patch of hair over site, rare neurologic deficits: - Answer:
Spina Bifida Occulta
Herniation of meninges through defect: - Answer: Spina Bifida Meningocele
Herniation of meninges and nerve roots through defect, associated with neurological deficits: - Answer:
Spina Bifida meningomyelocele
What is the major motion of the lumbar vertebrae? - Answer: Flexion and Extension
Sidebending of L5 will induce what in the sacrum? - Answer: Oblique Axis on the same side
Rotaion of L5 will induce what in the sacrum? - Answer: Rotation to opposite side
What is another name for the lumbosacral angle? - Answer: Ferguson's Angle
What is the intersection of a horizontal line and the line of inclination of the sacrum called? - Answer:
Lumbosacral Angle (Ferguson's Angle)
What is a normal angle for the Lumbosacral (Ferguson's angle)? - Answer: 25-35 degrees
Where do 98% of herniations occur? - Answer: L4-L5 or L5-S1
A herniated lumbar disc will exert pressure on the nerve root of the vertebrae (above or below)? -
Answer: Below
Sharp, burning or shooting pain radiating down the leg which is worse with flexion is indicative of what?
- Answer: Herniated disc
Increased pain when standing or wlking indicates what? - Answer: Psoas Syndrome
, What is the gold standard for the diagnosis of herniated disc? - Answer: MRI
What is indicated if a patient has ipsilateral psoas syndrome and contralateral piriformis spasm? -
Answer: Sciatica
A flexion contracture of the iliopsoas is often associated with what? - Answer: Non-neutral dysfunction
of L1 or L2
Lower back pain that is worsened by extension (standing, walking or lying supine) is most likely what? -
Answer: Spinal Stenosis
Anterior displacement of one vertebrae in relation to the one below is called: - Answer:
Spondylolisthesis
Fatigue fractures in the pars interarticularis is a common cause of what? - Answer: Spondylolisthesis
A defect of the pars interarticularis without anterior displacement of the vertebral body is called: -
Answer: Spondylolysis
Oblique radiographs showing a Scotty Dog is indicative of what? - Answer: Spondylolysis
What should you look for on radiographs if suspicious of Spondylolysis? - Answer: Scotty Dog
Forward displacement of one vertebrae on another seen on lateral films is indicative of what? -
Answer: Spondylolisthesis
Degenerative changes within the intervertebral disc and ankylosing of adjacent vertebral bodies is called
what? - Answer: Spondylosis
Saddle Anesthesia, decreased deep tendon reflexes, decreased rectal sphincter tone, loss of bowel and
bladder control are indicative of what? - Answer: Cauda Equina Syndrome (Surgical Emergency)
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