While the leading worldwide brands have developed studded football boots to stop the wearer losing grip on the pitch, this same development has also had the effect of causing more injuries to football players. The reason is this: greater grip means that the way players slide results in fewer falls, meaning that the ankle is put under strain and the knee can subsequently twist, which is another cause of knee injury that many people do not consider.
Also, falling unnaturally or trying to avoid falling after an impact could potentially cause an injury to the ACL. Highly skilled players also tend to change direction constantly, twisting their knees when doing so, and this twisting requires the opposite foot to grip the floor. Thus, if these players do not have the required strength in the muscles surrounding the knee joint, or if they have a lack of core strength to keep their balance, this can lead to a loss of balance which may also result in a torn ACL.
With this in mind, the best way to prevent against injury after an impact or an extended slide is not to fight against natural momentum. A good example of how to do this is by observing Ronaldo, who tends to spring forwards when falling to reduce the impact and due to this technique usually avoids injury in hard-fought matches.