One of my friends came to me for some advice. He has horrible ankles (he said his doc described one of them as "the ankle of a 65 year old" and the other as "the ankle of a 85 year old"). Point being, he has HORRIBLE ankles and can't run or stress them really. Yet he would love to workout his legs in the gym, but obviously cannot do exercises like squats, deadlifts or anything that requires him to stabilize his ankles. I recommended leg curls, leg extensions, seated good mornings, reverse hypers, ski squats, and umm, the one where you trap your ankles under something while on your knees and bend forward, thereby killing your hammies.
What do you SUGGEST?