I don't know what you did, but I broke my leg and then walked several miles to the road. In the walk or the fall, I tore the ligaments attached to my ankle and it dislocated as well as fractured. Once I got the cast off (12 weeks in a non weight bearing cast) I rehab'd myself by rocking in a rocking chair to regain the flex in my ankle and just walking. Don't worry, you will be able to figure out what needs to be done once the initial injuries are healed. A bike would be great no matter what the injury. Look for therapies that are gentle stretching and strengthening exercises and build up. They thought I would need formal physical therapy but once the doctor did the checkup to decide what therapist and therapy to prescribe, he decided my rocking chair was doing the trick. I have more than 90% flex in my ankle, no arthritis, and plenty of strength in that leg and joint.