![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 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](https://preview.redd.it/hcnxcp6e4d371.jpg?width=1080&crop=smart&auto=webp&s=34852e777aa89056db987ea2cc611dff60b67479)
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
![Osteochondritis - A condition occurring in children and adolescents - Orchard Clinic - Physiotherapy and Clinical Pilates Osteochondritis - A condition occurring in children and adolescents - Orchard Clinic - Physiotherapy and Clinical Pilates](https://www.orchardphysio.co.uk/wp-content/uploads/2018/09/Osteochondritis.png)
Osteochondritis - A condition occurring in children and adolescents - Orchard Clinic - Physiotherapy and Clinical Pilates
![Osgood-Schlatter Ossicle Resection and Tuberoplasty with Suture Anchor Repair of Patellar Tendon - YouTube Osgood-Schlatter Ossicle Resection and Tuberoplasty with Suture Anchor Repair of Patellar Tendon - YouTube](https://i.ytimg.com/vi/YIjBFMwlLy8/mqdefault.jpg)