Blackdog,
I taught a lady to fly; she had had a below-knee amputation of her right leg, and got by in a standard aircraft with her prosthesis, by wedging her backside tight into the seat for takeoff and landing and applying appropriate pressure - she was never very delicate on the rudder, but perfectly in control. I think you might perhaps be in the same boat leg-wise, but the arm side of things may be more of a challenge.
Good luck nonetheless.