Dr. Gruber, I am currently your patient and found this tutorial very interesting. I have been getting cordozone shots from Rob but the last round was not effective. I wonder if the reason is that no ultrasound was used. Can you help me with your surgery if I have a fully paced Pacemaker/defribulator? My rotator cuff tear is bilateral - related to heavy lifting a my old job. I would be thrilled if we could just tackle the worst one first - Left. What do you think? Martha