Abstract: A prone positioning therapeutic bed comprises a base frame and a patient support platform rotatably mounted on the base frame for rotational movement about a longitudinal rotational axis and a drive system for rotating the patient support platform on the base frame. A special head restraint apparatus maintains proper patient alignment during rotation. A weight monitoring system monitors a patient's weight over time. A touch screen user interface provides programmable therapy settings and displays statistics about past treatment. Circuitry is provided to minimize the risk that the failure of any single device or software program could endanger a patient. A “CPR” button is provided to arrest any program of therapy and return the patient support platform to a supine position.