Hard lump (feels like bone) under kneecap. Def not on right leg. Only left, and no pain. I exercise a lot (basketball and running). Any help on what this is? : r/AskDoctorSmeeee
Knee and Kneecap Problems - Seattle Children's
Osgood-Schlatter Disease | Johns Hopkins Medicine
What's the Bump Below My Knee | Easthill Physiotherapy & Acupuncture
Knee pain Information | Mount Sinai - New York
Does the bump below your knee cap hurt? It could be OSD – RED SPORTS