My dad was in a bad car accident at 33. Among other injuries, it shattered his left pelvis, to the point that they thought he might never walk again (which still sounded pretty good, since with his internal injuries he was originally given a 10% chance of even living through surgery!). He left the hospital ten days later on crutches, and graduated to a cane within a few weeks. He auditioned for a community theater show about three months later and was cast as the Ancient Man (because he was still using the cane, and a bit shaky). About halfway through the six-week rehearsal period, he got yelled at by the director. "What are you doing, Andy?" "I'm walking across the stage." "You're just tootling along at top speed!" "Oops, sorry. I'm healing!" By that point he wasn't using the cane in daily life, just for the show.
Dad's primary PT was water aerobics...he said he was the only male and the only one under 70 in the class! But supposedly since the water supports your weight, it's one of the best ways to heal a pelvic injury.
He healed fine, and had no apparent lasting effects. Unfortunately he developed arthritis about 15 years later, which doctors say is a result of the car accident.