The question "What is P Syndrome in the knee?" is incomplete. A more accurate question, based on common knee pain terminology and the provided reference, would be: What is Patellofemoral Pain Syndrome (PFPS) of the knee?
Patellofemoral Pain Syndrome (PFPS), often called runner's knee, involves pain at the front of your knee or around your kneecap (patella). This area is where the kneecap connects to the lower end of your thighbone (femur).
