It's not recommended to use a tennis racket with a damaged frame. A damaged frame can affect the performance of the racket and potentially cause injury to the player.
A damaged frame can cause the racket to lose its tension, resulting in a loss of power and control. It can also cause the strings to break more frequently, making the racket less reliable and more expensive to maintain.
Additionally, a damaged frame can cause the racket to become unstable, making it difficult to hit accurate shots and potentially causing injury to the player's arm.
If a tennis racket has a damaged frame, it's recommended to replace it with a new one or have the frame repaired by a professional racket technician. Using a damaged racket can compromise your safety and negatively affect your performance on the court.