A system of manual musculoskeletal assessment, treatment, and rehabilitation based on sound scientific principles. Functional Range Release technique, or FR® Release is an advanced, and comprehensive system of musculoskeletal assessment, treatment, and rehabilitation utilized by leading manual medical practitioners and therapists around the world including Physical Therapists, Chiropractors, Registered/Licensed Massage Therapists, Registered Nurses, Osteopaths, Athletic Trainers, Medical Doctors, etc.