Check out a book on stretching for more information. Search the internet under stretching, yoga, etc. Again to follow the RICE guidelines see a physician if symptoms persist. The physician will determine the extent of the injury and may obtain x-rays, start them on a rehabilitation program with a gradual progression in their activities. Surgery is sometimes necessary depending on the extent of injury, casting, braces are used to provide support to joints.
Massage can be helpful several days after acute injury to help break down muscle spasms.
One should wait for the initial inflammation from the injury to subside. Massage seems to be most helpful regarding the muscles of the back and neck and have relatively little value with joints. Dr. Colbert Tennis elbow is an inflammation of the wrist extensors at their origin which is the lateral epicondyle of the elbow. It's more formal name is known as lateral epicondylitis and it usually occurs with overuse activities. That's why tennis players are so susceptible, particularly when they have incorrect body mechanics or stroke execution.