Medically reviewed by Jennifer Steinhoff, MD Key Takeaways The lumbar spine includes five vertebrae that help with mobility ...

Sacralization is a condition where the base of your spine has fused to the top of your pelvis. Your bottom vertebra is called the L5 lumbar vertebra. It’s joined to your sacrum, the upper ridge of ...

Lumbar radiculopathy is inflammation of a nerve root in the lower back that causes symptoms in the back and down the leg. Radiculopathy is pain and other neurological symptoms caused by the pinching ...