 For joint pain relief, you just sit in a chair and strap the appliance to your knee, your shoulder, or your elbow. Now you can get powerful hospital-grade pain relief right in your home without the inconvenience of going to a hospital. And it will cost you much less than going to a hospital. If you act right now, you can get the EdenPure Smart Pain Knot Back and Joint Appliances at a $100 discount.