If you're suffering neck pain, the chances are you'll be treated either with an exercise programme, traction, nerve stimulation (TENS) or ultrasound.
Although any one of these is considered to be the best method for treating your condition, there is no scientific evidence to support the claim.
None seemed particularly effective, concluded researchers who looked at all the studies. Of all the options, manual treatments might have the best chance of offering relief in the short term.
!ABMJ, 1996; 313: 1291-6.