Stem cell injections work similar to flu shots. Flu shots are dead viruses used create an immune response. Because stem cells are viable they generate a healing response that activates a restructuring process to regenerate tissues needed to combat pain, inflammation and degeneration. This process repairs joint structures and reduces pain making you more mobile and productive and improves your quality of life. A typical MSC injection contains up to three million stem cells that proliferate for 5 years reconstructing tissues.