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. 2015 Apr 23;49(22):1452–1460. doi: 10.1136/bjsports-2014-094573

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Direct contact mechanism (right knee). (A) At−60 ms, the player is jogging forward at slow speed towards the sideline trying to screen the ball from the opponent. (B) At initial contact, he strikes the pitch with his right heel and holds the trunk in a neutral position. (C) At 140 ms, having the entire load on his right leg, he is tackled from behind with forceful lateral impact to the knee joint. (D) At 440 ms, he falls backwards and his right knee clearly give way in substantial abduction (dynamic valgus collapse).