The anterior cruciate ligament (ACL) is a band of dense connective tissue which courses from the femur to the tibia. The ACL is a key structure in the knee joint, as it resists excessive forward movement and rotational loads. Three major types of ACL injuries are described as direct contact, indirect contact and non- contact. Anterior cruciate ligament (ACL) injuries are common in young individuals who participate in sports activities associated with pivoting, decelerating and jumping. Most common are the non-contact injuries, caused by forces generated within the athlete’s body while most other sport injuries involve a transfer of energy from an external source. A torn ACL is extremely painful, particularly immediately after sustaining the injury. There may be an audible pop or crack at the time of injury. Approximately 75% of ruptures are sustained with minimal or no contact at the time of injury. Women are three times more prone to have the ACL injured than men. Symptoms include - A feeling of initial instability which may be masked later by extensive swelling, Episodes of giving way especially on pivoting or twisting motions, Swelling of the knee, Restricted movement (especially an inability to fully extend the knee) and Possible widespread mild tenderness

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