The lateral ligament is a key structure in the human body, primarily found in the ankle and knee joints. It consists of several ligaments that provide stability and support, helping to prevent excessive movement that could lead to injuries. In the ankle, the lateral ligament complex includes the anterior talofibular ligament, calcaneofibular ligament, and posterior talofibular ligament. In the knee, the lateral ligament is often referred to as the lateral collateral ligament (LCL). This ligament connects the femur to the fibula and helps maintain the knee's stability during movement. Injuries to the lateral ligament can result in pain, swelling, and reduced mobility.