What Causes Runner’s Knee Pain?
Runner's knee, also known as patellofemoral pain syndrome (PFPS), refers to pain around or behind the kneecap (patella). It is most commonly seen in individuals who participate in sports that involve repetitive knee motion, like running, cycling, and jumping. One of the primary causes of runner's knee pain is overuse or repetitive stress on the knee joint, which can lead to irritation of the soft tissues, cartilage, or tendons around the kneecap. Improper alignment of the kneecap, where it doesn’t track properly along the femur (thigh bone), can also contribute to pain. This misalignment can be due to muscle imbalances, tight muscles, or weak quadriceps (the muscles in the front of the thigh), which fail to properly stabilize the knee.
Other factors that can contribute to runner's knee pain include incorrect footwear, biomechanical issues, and poor running form. Running or exercising on hard surfaces or with improper technique can exacerbate the stress on the knee. Flat feet or overpronation, where the foot rolls inward too much, can increase the risk of developing runner’s knee by affecting the alignment of the entire lower leg. Previous knee injuries, such as ligament damage or tendonitis, can also make the knee more prone to developing this condition. If not treated, runner's knee can become chronic, leading to further damage and requiring more intensive interventions, such as physical therapy or, in rare cases, surgery.
