To understand the source of the pain, one needs to know a bit about facet joints. The human back is a column of a vertebra. Thirty-three vertebral bones constitute the neck, thoracic spine, and lumbar spine (lower back). These vertebral bones are joined with each other with the help of two kinds of joints. A joint with large disc-like cartilage between each vertebral bone can bear the body’s weight and act as a cushion while moving – this is not a facet joint.
