Strokes can effect patients in a variety of ways depending on which area of the brain is damaged. 85% of all stroke survivors report developing pains in the arms and, more specifically, the shoulder. This pain tends to be on the side of the body effected during the stroke and can be caused by a weakening of the muscles that control the shoulder joints. Traditionally this pain is controlled with painkillers or steroid injections if the area is inflamed. These methods are only short term solutions as long-term use of painkillers can introduce new problems to the patient, however, a new technology has been developed that can control chronic shoulder pain in a more long term, drug-free way.