In Osgood-Schlatter disease, a patient may present after several years of recurrent symptoms of anterior knee pain and swelling. Commonly for this condition, there is also a history of a very athletic/ active adolescence. 

If not managed early, the condition can progress to several sequelae including formation of ossicles within the distal patella tendon, pseudoarthrosis between a patella tendon ossicle, and the tibial tuberosity as well as pseudo-intra-articular loose bodies.