Pulsed Signal Therapy was developed by Dr. Richard Markoll, a biophysicist and physician. It has been used extensively in Europe for the treatment of osteoarthritis, rheumatoid arthritis, tendon and ligament injuries. The PST device creates a low power electromagnetic field through which pulsed electrical signals are delivered to an affected joint or other painful area of the body. These low powered electrical signals mimic signals found to be generated naturally by healthy cells exposed to routine stresses of normal physical activity. Researchers suspect that these signals direct the body to nourish and replace damaged tissue. By mimicking natural signals, the PST device is able to activate and harness the body’s innate ability to heal itself. The treatment consists of 9 half hour sessions administered once or twice daily on consecutive days.