Knee ligament injuries are very common, especially among athletes, fitness enthusiasts, and even people who perform daily physical activities. The knee has four major ligaments – ACL (anterior cruciate ligament), PCL (posterior cruciate ligament), MCL (medial collateral ligament), and LCL (lateral collateral ligament). Damage to any of these can cause pain, swelling, weakness, and difficulty in movement. If left untreated,…