Out of all low back pain cases we see, this one is the most common. Whereas pain due to irritation of the disc is typically caused by repetitive forward flexion, low back pain can also be caused by too much movement in the opposite direction. The facet joints in the low back are motion-restricting joints, they help provide stability and prevent excessive movement in different directions. When there is too much extension backward, these joints become irritated and inflamed and a condition known as facet syndrome develops. It is often seen in individuals with a sway back posture (overarching at the low back) and jobs or sports that require a lot of overhead activity.