PRP stands for Platelet Rich Plasma, which is a fluid made from your own blood that contains a concentrated amount of your platelets. In addition to their role in stopping bleeding, platelets contain more than 1,500 proteins that contribute to healing. Fortunately for in orthopaedics, the tissues they help heal really well include tendons, ligaments and muscles. They also help decrease pain and inflammation, and slow down degeneration, in conditions such as arthritis.