Shock wave treatment has been used in Europe for the last 15 years. It's fairly new in the United States. There are different kinds of shock-treatment. There's low-energy treatment. This is said to be "unpleasant" by all patients.

High-energy shock waves would be painful but doctors use an anesthetic first. This could be just a local block to the area. For example, the foot would be numb from the ankle down to the toes. In conscious sedation, the patient is put to sleep for the procedure.

Ask your doctor what kind of energy waves are going to be used and whether or not you'll feel them. Don't be afraid to mention your concerns before the operation is scheduled.