https://www.hopkinsmedicine.org/health/conditions-and-diseases/patellofemoral-pain-syndrome-runners-knee Patellofemoral pain syndrome (PFPS), also known as runner's knee, means that you have pain in front of the knee or around the kneecap (patella). This is where the knee connects with the lower end of the thighbone (femur). Image Size Requirements in Barista New VUMC hospital expansion