Category: floating sacrum

Floating Sacrum

Floating Sacrum

In humans, the sacrum (/ˈsækrəm/ or /ˈseɪkrəm/; plural: sacrums or sacra) is a large, triangular bone at the base of the spine and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones. Its upper part connects with the last lumbar vertebra and the bottom part with the coccyx (tailbone). It consists of usually five initially unfused vertebrae that begin to fuse between ages 16–18 and are usually completely fused into a single bone by age 34.

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