Podcast
Questions and Answers
What is the purpose of the lordotic framework of the lumbar spine?
What is the purpose of the lordotic framework of the lumbar spine?
- To assist with flexibility and increase shock absorption (correct)
- To restrict flexibility and minimize shock absorption
- To increase flexibility and decrease shock absorption
- To cause rigidity and reduce shock absorption
What percentage of the population has a transitional vertebrae in the lumbar spine?
What percentage of the population has a transitional vertebrae in the lumbar spine?
- 50% to 60%
- 10% to 15%
- 3% to 35% (correct)
- 20% to 30%
Which part of the lumbar vertebrae increases in size as you travel caudally in the spine?
Which part of the lumbar vertebrae increases in size as you travel caudally in the spine?
- The transverse process
- The vertebral body (correct)
- The neural arch
- The posterior elements
What is the most frequent site of mechanical failure of the pars interarticularis?
What is the most frequent site of mechanical failure of the pars interarticularis?
What part of the vertebrae is more wedge-shaped, taller anteriorly, and helps to create the normal lumbar lordosis?
What part of the vertebrae is more wedge-shaped, taller anteriorly, and helps to create the normal lumbar lordosis?
Where are stress fractures (spondylolysis) most likely to occur due to large bending forces?
Where are stress fractures (spondylolysis) most likely to occur due to large bending forces?
What part of the vertebrae creates the zygapophyseal joints?
What part of the vertebrae creates the zygapophyseal joints?
In the mechanism of weight transmission in an intervertebral disk, what prevents the nucleus pulposus from expanding radially?
In the mechanism of weight transmission in an intervertebral disk, what prevents the nucleus pulposus from expanding radially?
What decreases the forces on the lumbar spine when lifting a load?
What decreases the forces on the lumbar spine when lifting a load?
Which direction of joint articulation primarily allows flexion and extension in the lumbar facet joints?
Which direction of joint articulation primarily allows flexion and extension in the lumbar facet joints?
In which levels of the spine does the majority of spinal flexion and extension occur?
In which levels of the spine does the majority of spinal flexion and extension occur?
What limits torsional stress on the lumbar disks?
What limits torsional stress on the lumbar disks?
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