Tendon injuries are a common thing I see. Let's say you're working in your yard and you pick up a sharp piece of metal and then you cut your finger and can't move it. That's probably because you have a tendon injury. You can also get nerve injuries at the same time. That requires a hand surgeon to fix, because those are very delicate structures. Not only is the surgical expertise required, but you also have to understand the rehab - how to get people back to function.