The iliotibial tract, commonly referred to as the IT band, is a thick band of connective tissue located along the lateral aspect of the thigh. Synonyms for the IT band may include the iliotibial band, fascia lata, iliotibial tract syndrome, and ITB syndrome. Additionally, this structure is often referred to in sports medicine as the "runner's knee" due to its association with overuse injuries in long-distance runners. IT band pain is a common complaint and can be remedied through various stretching, strengthening, and foam rolling techniques. Proper treatment of IT band injuries can help athletes return to their sport and prevent future complications.