“…[5] However, the surgical treatment of CR is still controversial as a result of many complications after operation involving adjacent segment degeneration, loss in intervertebral disc height, and so on. [6] Conservative measures, including manual therapy, exercise, traction, cervical collar, and nonsteroidal antiinflammatory drugs, can relieve pain, improve neurologic function for CR patients. [2,3,7] However, none of the commonly recommended nonsurgical therapies for CR has been examined in randomized, placebo-controlled trials.…”