Low back pain is a very common and disabling medical condition. There are many potential sources of back pain including the intervertebral discs, muscles, ligaments and tendons. The most common source of back pain is the facet joint with is the source of movement in the spine. There is a pair of facet joints, one on each side of the pain at each level from the top of the neck to the bottom of the back. There are 24 pairs of facet joints in the spine. 7 in the...