Kata is a great form of healing and rehab. There are 3 katas I can think of off hand that are great to work on. Nan Dan sho, Ten sho, and Shudi sho , are all breath retention katas that make you use good form, good posture, and gather strength and focus. When run properly can help the student running the kata gain better control on the body which in turn helps with any imbalances. Breath retention is a basic form of meditation. These katas are basic meditation with movement.