While I do not have it for the same reasons, it is not an uncommon end result in some surgeries, and cannot be avoided many times. In my case 3 years out from radiation treatments, I began to develop nerve damage from the radiation treatments which has caused a similar situation. It will only get worse for me as time goes on, yours will likely stay the same forever. But for all of us, I suspect we view this as a very small price to pay for still being on this side of the grass.