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Lumbar Spine Anatomy and FunctionMedically reviewed by Isabel Casimiro, MD, PhD Fact checked by Jillian Dara The lumbar spine includes the five vertebrae in ...
There are 12 thoracic vertebrae in the thoracic region. There are 5 lumbar vertebrae in the lumbar region. There are 5 sacral vertebrae, which are fused as one bone and known as the sacrum, in the ...
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Lumbosacral Joint (L5-S1): Anatomy and Pain SymptomsL5-S1 is the exact spot where the lumbar spine ends and the sacral spine begins. The lumbosacral joint connects these bones.
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