Runner's knee is associated with which of the following structures?

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Runner's knee is also called patellofemoral pain syndrome and is typically caused by irritation of the cartilage on the underside of the kneecap. This can be due to a variety of factors, including overuse, muscle imbalances, and problems with the alignment of the knee joint. One common contributor to runner's knee is tightness or inflammation in the iliotibial band, a thick band of tissue that runs down the outside of the thigh and attaches to the knee.

Runner's Knee Is Associated with Which of the Following Structures