Hi, when you say OA are you referring to osteoarthritis? From context I feel like you are referring to a medical professional. Either way, though, personally, after decades of RA, my hands definitely aren't steady and combined with the medications I take that can cause tremors that do happen at times and my fingers don't listen to what I say. It's frustrating and can really take it's toll - you are not alone in that. Let us know if there's anything we can do to help, hopefully tomorrow will be a lower pain day. Keep on keepin' on, DPM