mizzouflyer, welcome to FlyerTalk!
I've had hip and knee replacement surgery and TSA will not accept surgeons' letters as an alternative to the need to resolve an alarm from the walk-through metal detector. What can expedite the screening process is to use the millimeter-wave detection scanning, when available. It's always obviated any extensive pat down for me.
As this is a travel security issue, I'll move to the apt forum for more discussion. Ocn Vw 1K, Moderator, TravelBuzz.