The deltoid ligament is a strong, triangular band of tissue located on the inner side of the ankle. It connects the tibia (the larger bone of the lower leg) to several bones in the foot, including the talus and calcaneus. This ligament plays a crucial role in stabilizing the ankle joint, especially during activities that involve weight-bearing and movement. Injuries to the deltoid ligament can occur due to ankle sprains or trauma, leading to pain and swelling. Treatment often involves rest, ice, compression, and elevation (RICE), along with physical therapy to restore strength and flexibility. Proper care is essential for a full recovery and to prevent future injuries.