About 6 weeks ago I fell while running on a rocky trail and hurt my foot (no fracture according to xrays). Since then I am unable to do lunges when my right foot is in back position because of the pain I experience on the bottom of my foot. Is there an alternative to lunges that work the muscles in the same way. I continue to do squats, deadlifts etc with no problem. It's the toe position that I can't do. Thanks for any help.