ACL (anterior cruciate ligament) reconstruction is a surgical procedure designed to repair or replace a torn ACL in the knee. The ACL is a crucial ligament that helps stabilize the knee joint, and its injury commonly occurs during sports or high-impact activities. The procedure involves using a graft, which may come from the patient’s own body (autograft) or a donor (allograft), to replace the damaged ligament. The surgeon reconstructs the ACL by attaching the graft to the bone using screws or other fixation devices to restore knee stability and function.