ACL Tears are common and can happen in a wide range of situations. More often than not, however, they occur during sports. For example, when you have your foot firmly planted on the ground and you are suddenly hit by someone or something. This might also happen when you abruptly change directions or land from a jump, which might also lead to ankle injuries. While this is a common sports injuries, they may happen at any time. Here is a complete look at its causes: Stopping abruptly Direct blows to the knee or collisions Slowing down abruptly Awkward landings from a jump Changing direction abruptly Overextension of the knee joint Pivots with the foot firmly planted If you are also experiencing pain in your ankles, perhaps it is time to visit our orthopaedic doctors for ankle injury treatment.