heh
Anyways, it his right leg that's, ehm, compromised. In F1 they use right foot only for the throttle and the left foot brakes (I'm sure you didn't know this). As the left foot is the one that has to deal with much bigger forces he's not really in any big trouble.
I really really hope that rbr has a good car next year. I'm extremely sceptical about it and I really wish Vettle would have chosen some other team, even if there really wasn't anything much else to choose from. Would have liked to see how Werbbe does in a good top team...