Prepatellar bursitis is an inflammation of the bursa in the front of the kneecap (patella). It occurs when the bursa becomes irritated and produces too much fluid, which causes it to swell and put pressure on the adjacent parts of the knee. (Left) Normal knee anatomy shown from the side. The bursa is small and located between the patella and …
https://orthoinfo.aaos.org/en/diseases–conditions/prepatellar-kneecap-bursitis

