I sympathise Peter and wish you a speedy recovery. Having just turned 70 this year it focuses thoughts on reducing mobility, stiff joints etc.

Having said that I took advantage of a neighbours offer of 1500 patio slabs allowing a new one from our kitchen doors and a hard standing for my LR to be layed. They were moved essentially by hand cart and laid on sand. Apart from occasional arthritis in a little finger my whole body felt more flexible, after the initial stiffness subsided. Presently on my narrowboat operating heavy double locks with similar advantage.