Questions and Answers
What is the main function of the sacral hiatus?
To allow the spinal nerves to exit
Which lumbar vertebrae have a coronal orientation of facet joints?
L5-S1
What is the typical shape of the IV disc at L4-L5 and L5-S1?
Wedge-shaped
What is the main function of the posterior sacroiliac ligament?
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Why does the lumbar spine have sagittal-oriented facets in upper lumbar vertebrae?
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What causes instability in pelvic fractures according to the text?
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