Traction Therapy is used to treat pinched nerves, neck and back tightness, and headaches. While in traction, the neck or the low back is stretched, and along with it, the spine is stretched a little as well. If you have pinched nerves in your spine, this can help take some of the pressure off and ease arm or leg pain. Traction is also good for treating bulging discs in your spine, which can pinch your nerves if they lose enough water in the middle. By pulling your spine apart a little, traction can help the disc water and gel slip back into place.