Hiya my girl frend nancy has the same problems her spine was fused and has 2 titanium rods bolted in her back there is a condition and I can't spell as its a long word.
it is degenarative and she is wheel chair bound I think life has given her a rough deal but I make sure she is all right.
I brought her a cart so her wheel chair goes in the back folds down like a ramp you remove a seat and the wheel chair clamps in.
And had reins made with loops so she can drive.
She came down to were I was on holiday a frend brought her down and she had a ride in the newforest she rode for half a mile I was beside her suporting her and she was in so much pain.
My frend how about driveing it might be a better option I can see your frustration at your body changes as I see it in nancys.
My frend you take care ok.