A rotator cuff injury is a common accounting for nearly 4 million visits to the doctor in the United States. The shoulder joint is one of the most powerful joints in your body but is necessary for even the smallest everyday activity such as combing your hair. Injury to a should significantly impact a person’s quality of life, making it difficult to perform even simple tasks and causing pain and discomfort. Note: Despite all advances in stem cells research and the application of these therapies in many countries all over the world, stem cells therapies are not legally approved yet in San Diego, Los Angeles, Chicago, Dallas, New York, Jacksonville, Seattle, Houston, San Francisco, Salt Lake City, Miami, Beverly Hills and other US cities. However, stem cell treatments are legal in Costa Rica.