Physical therapists (PTs) are health care professionals who diagnose and treat individuals of all ages with medical problems limiting their abilities to move and perform functional activities. Doctors refer patients to a physical therapist for conditions such as low back pain, arthritis and broken bones as well as those recovering from surgery, accidents, strokes and heart disease. Physical therapists help patients decrease pain and improve strength. They must evaluate the patient’s posture, balance, strength, muscle function and range of motion. When their evaluation is complete, therapists write a treatment plan which includes the types of treatment to be used, the purpose and the intended outcome.