P90X' Peeps - Workouts from a chair with leg in a cast?!

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Hi all P90X'ers!

I did P90X a couple of years ago and loved it. I have just had ankle surgery (Achilles reconstruction) and really want to have a go at P90X again, but modify it!

Which (if any) of the workouts do you think I could do from sitting or with very little standing? Or is it just not possible?

Anyone every tried P90X with an ankle injury?

Thanks so much for any advice!

Alicia. x