The fibula is a long, thin bone located in the lower leg, parallel to the larger bone called the tibia. It plays a crucial role in stabilizing the ankle and supporting the muscles of the lower leg. While it is not weight-bearing like the tibia, the fibula helps maintain balance and provides attachment points for ligaments and tendons. In addition to its structural function, the fibula is important for movement. It connects to the ankle joint, allowing for flexibility and mobility when walking or running. Injuries to the fibula, such as fractures, can affect a person's ability to move and may require medical attention to heal properly.