How useful are they in the treatment Lumbar Back Pain, can they be used by the patient himself or only by a phsiotherapist.How often and how long use in each sessionSimilar Threads: EMS machines for loosening tight back muscles? why SWD and IFT in sciatica? vibrator massage for diabetes mellitus!! Mechanical chest Vibrator IFT,Electric Up/Down Bed and Traction, Ultrasound etc