Patellofemoral pain syndrome (PFP) or anterior knee pain is an umbrella term used to describe pain felt at the front of the knee or around the knee cap (patella). Many factors can contribute to this condition, such as an injury, flat feet, tightness or weakness in the lower leg muscle.
Every time your knee straightens and bends your knee cap moves up and down a groove in your thigh bone (femur). If the muscles in your thigh or buttock are weak or tight this can have an influence on this movement and overtime this can cause pain. By correcting these imbalances this will most likely improve your symptoms.