Knock on wood, I have had great fortune in not suffering too many ankle, foot, knee or leg injuries. Can't say the same about my elbow and shoulder, but that's another issue.
Mostly, I stretch my Achilles tendon a bit before dancing, as that would be one of my greatest fears. It seems that injury can hit any one of us out of nowhere, and that would be a tough one to recover from.
Pain in the heels and arches can be troubling, but with some care, those usually come around. I have noticed an occasional pain along the top of my foot, but only when I have been doing heavy doses of walking in addition to practicing dances that require full extension on the balls of your feet (waltz, especially).