Pilates has taken off in recent years. The basic principles of using core muscles and exercises to stretch, strengthen, and balance the body, are sound. Similar techniques have been used in physical therapy for many years.
Here is an interesting article about the intersection of physical therapy and Pilates.
At Back and Body Care, we work with our patients who are interested in pursuing Pilates classes. We help them transition from hands on physical therapy to Pilates classes in a safe manner.