L5
Fifth lumbar bone
L5 refers to the fifth lumbar vertebra, the lowest bone of the spine before the sacrum.
This vertebra bears much of the body's weight and is a common site of back problems: The MRI showed a herniated disc at L5.
L5 also designates the fifth Lagrange point—a gravitationally stable position in orbital mechanics where spacecraft can maintain position relative to two larger bodies.
vertebra
Column of vertebrae
- lumbarOf the lower spine
- lower backSpine's bottom section
- sacrumFused vertebrae above tailbone
- discFlat circular object
vertebrae · intervertebral · spinal column · backbone · lumbosacral · nerve root · sciatic · herniation
spine
Column of vertebrae
- lumbarOf the lower spine
- lower backSpine's bottom section
- sacrumFused vertebrae above tailbone
disc · vertebrae · intervertebral · spinal column · backbone · lumbosacral · nerve root · sciatic · herniation · lordosis
- Lagrange pointsL1
- lumbar spinelumbar spine, lumbar vertebrae, L1, lumbar region, lumbar disc
spinal region
Upper vertebral column segment
cervical vertebrae · thoracic vertebrae · upper back · C-spine