Worldwide, lower back pain is associated with high economic costs, disability, and decreased productivity. Although there are various guidelines on the management of lower back pain, its overall management, including diagnosis and treatment, still remains controversialVarious conservative treatments are used to improve and recover from neurological symptoms of degenerative disc disease [3]. Of such treatment methods, traction treatment maintains the intervertebral height in degenerative disc disease patients, slows down the degenerative changes of discs [4], decreases lower back pain, and reduces the compression of discs within the vertebrae [5][6]. However, other studies have reported that the effects of traction are unclear [7], and the effects remain controversial [8][9].Flexion-distraction spinal manipulation, which is a type of low-velocity variable amplitude spinal