If you need to exercise, but you have had an injury, Tai Chi or Qui Gong can both be excellent forms of exercise for you. It will involve whole body movement, but in a very controlled and gentle way.
This is just one sample of how you can build core strength and flexibility, while burning calories in a whole new way..
I have been a personal trainer and massage therapist for many years now. My specialty is getting people moving again. I have learned through the years that preventing injuries is as important as relieving pain after an injury. To that end, I have also learned Yoga, Tai Chi, Qi Gong and Pilates.