I use the CronusMAX dongle that was mentioned, but I don't know if I would recommend that for you situation. I have a severely movement limited right hand, but I think your left hand would cause problems with Keyboard and mouse set ups. Left hand handles movement with WASD and other key bindings and the mouse handles aiming and triggers(more if you have extra buttons on your mouse, but my gimp hand can't use them. What I would probably recommend for you is getting yourself an elite controller. Binde LEft trigger and bumper to the right elite paddles and use the internal xbox device manager to remap the left joystick in onto the right joystick in. then use your palm or the side of your hand to manage the joystick. This kinda hinges on how dextrous your right hand is. I write with my broken ass right hand because the chicken scratch my healthy left hand produces is abysmal, so a set up like this wasn't plausible for me.