Therapeutic Health for the Mobility Challenged. The Physical Movement Therapy Device (PMTD) is a passive technology which would “Facilitate the Law of Movement”. Consider the impact that loss of movement has on one’s body - physically and emotionally. The body was designed to move to keep it healthy. When one loses the ability to control the body's movement, independence is also lost. If you are injured in an accident, or suffer from a disease or birth defect that restricts body movement, alternative methods of movement must be attained. The PMTD can be the answer to movement challenges for many. PMTD eliminates bad circulation, spasticity, edema, muscle atrophy, stiff joints, and potential infections from lack of movement causing disease