If you speak Spanish and would like to join an functional rehab program in the Balearic Islands, have a look at the program offered by the Fundación Kovacs at S’AiguaBlava. The program is called Escuela de Balear de la Espalda Es. There are three facilities, each with a fantastic back-oriented gym program, and an amazing “high vitality” spa – which in much of Europe means hydrotherapy in a large pool with may stations equipped with jets at different heights. The facility I visited, on Majorca, combined physical therapy with supervised, high intensity exercise.
Here (again, in Spanish) is a video with director Dr. Mario Gestoso, explaining what goes on in the Back School.