Certain types of activity, particularly the wielding of a tennis racquet, put undue stress on the muscles of the forearm. The result can be extremely incapacitating as well as resistant to treatment. The earlier specific measures are introduced, the greater the success of conservative treatment. To provide this approach the physician must be aware of the multiple factors involved in the game. The backhand stroke appears to cause more problems than the forehand. Inexperienced players use the power of their elbows far more than the power of their whole bodies. Changes of technique or equipment may therefore be necessary.