Definition of S1-S5 (sacral vertebrae)
S1-S5 (sacral vertebrae): The first sacral vertebra through the fifth sacral
vertebra.
There are 5 sacral vertebral bones. They are represented by the
symbols S1 through S5.
The sacral vertebrae are situated in the spinal column just below
the lumbar vertebrae and right above the coccyx, which is the lowest
segment of the vertebral column. The sacral vertebrae are normally
found fused together to form the sacrum.
Last Editorial Review: 6/14/2000
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