I was in a walking boot for a trip and didn't ride attractions that were difficult to get in and out of - at Magic Kingdom I skipped Splash, Space, Dumbo, the Carpets, the Teacups, or AstroOrbiter. At DHS, I skipped Rock n' Rollercoaster. AK was fine (didn't do triceratops spin). EPCOT was a breeze.
I had a wheelchair which was a lifesaver. I should also add: I'm 5'10" and have very long legs so the rides I listed are already a little tricky to maneuver around in!