Have you seen the thigh riders, a belt that straps around a person's thigh that has a penis dildo sticking up from it? You could right him on his good thigh, I'm sure that would turn him on and take good care of you over the weeks he's on the mend, and you can always give him oral sex, hand jobs and whatever else makes him happy in the meantime. Toys, toys and more toys, they're the spice of life! Best of luck as he is recuperating.