Despite the efforts of football authorities and referees football is a contact sport. For the fan this is part of the attraction of the game. They love to watch the blood and thunder excitement of players sliding in and giving their all.
However, sometimes players can overdo it and this can result in serious injuries which can be career threatening or even lead to lifelong chronic problems. When they retire many players who have not been seriously injured tend to suffer from knee pain so footballers who get injured are unavoidably scarred for life.