i think it's worth a try. i have used one. the first one provided didn't help and i had to switch to another kind. i have found it irritating at times when i have had sensitivity to vibration. if your insurance company is providing it they will probably supply a rented one and then if you need it for a long duration and find using it valuable they will buy it for you. the rental gives you the opportunity to find out what works best for you. if you are in PT they are usually helpful in instucting you how to use it and in choosing which one might be well suited to you. good luck btw-we had a thread recently on placemnt of electrodes for TENS