Podcast
Questions and Answers
What is the function of the lordotic framework of the lumbar spine?
What is the function of the lordotic framework of the lumbar spine?
- To limit flexibility
- To increase flexibility and shock absorption (correct)
- To decrease the ability of the lumbar spine to absorb shock
- To have no impact on flexibility or 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?
- 70% to 80%
- 50% to 60%
- 3% to 35% (correct)
- 90% to 95%
What are the components of the lumbar vertebrae?
What are the components of the lumbar vertebrae?
- Vertebral body, neural arch, posterior elements (correct)
- Pedicle, articular facet, lamina
- Vertebral body, anterior elements, transverse processes
- Superior vertebral notch, spinous process, inferior articular facet
Which part of the lumbar spine increases in size as you travel caudally in the spine?
Which part of the lumbar spine increases in size as you travel caudally in the spine?
What is the function of the wedge shape of the lower three vertebrae?
What is the function of the wedge shape of the lower three vertebrae?
Which part of the vertebra is the site of stress fractures (spondylolysis) due to large bending forces?
Which part of the vertebra is the site of stress fractures (spondylolysis) due to large bending forces?
What structures create the zygapophyseal joints between adjacent vertebrae?
What structures create the zygapophyseal joints between adjacent vertebrae?
How do the vertebral end plates bear weight in the intervertebral disk mechanism?
How do the vertebral end plates bear weight in the intervertebral disk mechanism?
What decreases the forces on the lumbar spine when lifting?
What decreases the forces on the lumbar spine when lifting?
What primarily allows flexion and extension in the lumbar facet joints?
What primarily allows flexion and extension in the lumbar facet joints?
Where does the majority of spinal flexion and extension occur?
Where does the majority of spinal flexion and extension occur?
What type of motion is limited by the lumbar facet joints?
What type of motion is limited by the lumbar facet joints?
