I have constant pain on work, because I work a lot with the mouse. An elbow syndrome has not been confirmed. Nevertheless, the pain is there. That reminds me so far no doctor could help you, I have made the experiment on himself with the condition. I find them super !!!! The wrist is much more relaxed. Unlike Tastaturauflage I see it as a great advantage that the mouse tray can be moved. Highly recommended and affordable alternative to a special ergonomic mouse.