Have you flown since your injury?
The human body has a great ability to compensate and heal itself.
Find a good instructor or someone you are comfortable flying with and go fly.
Really hard for someone without such an injury to comment, but it seems to me that for flying from the left hand seat, there is not much "feel" required for the left hand.
I wouldn't be too concerned about having "to start again". Flying is like riding a bike. You can get a bit wobbly but you never forget how to do it !!
Good luck, mate!
If you get over to Nth Qld, PM me if you would like to go for a lap in the FTDK with the Mad Dr.
Dr 