What Is a Normal Lumbar Disc and Facet Joint?

A normal lumbar disc and healthy facet joints are key parts of your lower back. The lumbar spine is made up of bones (vertebrae), soft discs between the bones, and small joints called facet joints that connect them.

These parts work together to support your back, absorb shock, and allow safe movement like bending or twisting. When the lumbar disc and facet joints are healthy, they help protect your spine and prevent pain or injury.

Understanding how these structures work can help you take better care of your spine and recognize early signs of problems like disc degeneration, facet joint arthritis, or lower back pain.