Anterior Collateral Ligament Tear

An Anterior Collateral Ligament Tear is an injury to one of the strong bands of tissue that connect bones in the knee, specifically the ligament on the front and side of the knee. This ligament helps stabilize the knee joint and prevent it from bending sideways or twisting abnormally. When this ligament is torn, it can cause pain, swelling, and difficulty moving the knee normally. The injury often happens during sports or activities that involve sudden changes in direction or impact. It affects the musculoskeletal system, particularly the knee joint, and can limit a person's ability to walk, run, or participate in physical activities. Healing may require rest, physical therapy, or sometimes surgery depending on the severity of the tear.

An Anterior Collateral Ligament Tear refers to a partial or complete disruption of the ligament located on the anterolateral aspect of the knee, which provides lateral stability by resisting varus stress and external rotation forces. This injury commonly results from a direct blow to the medial knee or a sudden twisting motion, often seen in contact sports or trauma. The tear compromises the mechanical integrity of the knee joint, leading to instability, pain, and impaired function. Clinically, it is significant because it can predispose to chronic knee instability, meniscal injuries, and early osteoarthritis if untreated. Diagnosis involves a combination of history, physical examination, and imaging. The injury is classified by severity into grades I to III based on ligament fiber disruption and joint laxity. Prompt recognition and appropriate management are essential to restore knee stability and function.