• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

Card Range To Study



Play button


Play button




Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

34 Cards in this Set

  • Front
  • Back
What is the mechanism of all thoracic spine injuries
hyperflexion (bc of fixed kyphosis of the thoracic spine)
Where do most traumatic injuries of the thoraco-lumbar spine occur
On lateral plain film views of the thoracic spine are all thoracic vetebrae seen
no (T1 and T12 are typically cut off)
What are the mc fractures of the upper thoracic vertebrae
What part of the vetebrae is typically involved in a compression fracture
What percent compression of the anterior portion of the thoracic spine is need for a simple compression and severe compression fracture
simple >10%

severe >50%
Is neurologic deficit common with sever compression fractures
yes, they are mechanically unstable and there may be retropulsion of fragments
What are the vetebrae of the thoracolumbar junction
What is the part of the thoracic spine most injured during traumatic injuries
Is a jump from a height a common cause of a thoracicolumbar injury
Besides a comminuted compression fracture what is associated with a fall from a height
a calcaneal fracture
What is the most common cause of a chance fracture
fall in flexion position and the 2nd most common is lap seat belts
What is the mechanism of of a chance fracture
distraction injury of the posterior portion and impaction of the anterior vetebral body
Describe a chance fracture
horizontal fx through the spinous process, lamina, pedicles and vetebral body
What is a chance fracture associated with 50% of the time
an abdominal injury
What abdominal organs are typically injured in a chance fracture
What is worrisome if there is a transverse process fracture in the region of L2
a renal injury
spond -de-lal-lysis
What is the mechanism by which spondylolysis occurs
defect in the pars
Where is the pars in the oblique view
Where is the pars in this oblique view (scotty dog)
What does a scoty dog look like on oblique x ray
Where is the pars located
located between the inferior and superior articular processes of the facet joint (same vetebrae...not inferior and superior of a connecting joint)
Where is the pars in this oblique view
Pedicle (right)
2. Superior articular process (right)
3. Pars interarticularis / isthmus (right)
4. Lamina (right)
5. Inferior articular process (right)
6. Transverse process (right)
7. Spinous process
8. Intervertebral disc
9. Interlaminar space
10. Transverse process (left)
11. Inferior articular process (left)
12. Superior articular process (left)
13. Lamina (left)
14. Vertebral body
What does a bilateral pars defect look like on CT
Note that the pars are posterior to the transverse process
What is the anatomy of scoty dog
Where is the pars on transverse plane
In the transverse plane, it lies between the lamina and pedicle
What is the pars closer too the inferior or superior articular facet
the superior articular facet
What does a pars defect look like on sagital CT
Note that if both pars break the posterior element will move posteriorly. Note that it looks like the inferior portion of the posterior veterbral element is breaking of while the superior articular facet stays attached to the vetebral body. This occurs even though the pars fracture occurs closer to the superior articular facet.
What happens when there is a bilateral defect of the pars interarticularis
What is spondylolisthesis
forward slippage a vetebral body
What are the important fractures to know of the thoracolumbar spine
simple compression
severe compression
chance fracture
axial loading (fall fracture..burst fracture)
transverse process fracture
traumatic spondylolysis
What is the difference between perched and locked facet
is a vertebral facet joint whose inferior articular process on one side appears to sit 'perched' on the superior articular process of the vertebra below. If it gets rotated any more it will slip down the opposite side and become locked