Patellofemoral pain syndrome Patellofemoral pain syndrome happens when your knee cap does not track properly. The knee joint consist of two joints. The tibiofemoral joint which is between the two long bones in your leg and the second one is the patellofemoral joint. This is between the femoral condyle (end of thigh bone) and the knee cap. The cartilage on the back of the knee cap glides on the cartilage on the front of the condyles of the femur. The knee cap usually sits in a snug groove at the end of the thigh…
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