The sixth lumbar vertebra is typically located just below the L5 vertebra, making it the lowest vertebra and positioning it next to your tailbone. The extra bone is essentially just a harmless anomaly; sometimes it’s because one vertebra failed to fuse with another, but in other cases it’s unclear why the bone appeared.
What is the L5 vertebra called?
L5 (5th Lumbar Vertebra) The fifth lumbar vertebra (or the L5 vertebra) is the largest and most inferior of the lumbar vertebrae. As the last of the lumbar vertebrae, the L5 vertebra bears more body weight than any of the other 23 vertebrae that sit atop it in the vertebral column.
What is sacralisation of the L5?
Sacralisation of L5 assimilation of L5 to the sacrum more common than lumbarisation, occurring in ~17% of the population 2 presence of four rib-free lumbar type vertebrae, which may have the following features wedging of the lowest lumbar (transitional) vertebra. hypoplastic or absent facet joints or intervertebral disk