Osgood-Schlatter disease is a knee problem that causes pain and swelling in the shinbone (tibia) just below the kneecap (patella). This is the spot where the patellar tendon attaches to a bony mound in the knee called the tibial tubercle.
Older children and teenagers often get Osgood-Schlatter disease during a growth spurt. Certain young athletes, such as runners, gymnasts, and those who play soccer, football, or basketball, are more likely to have this type of knee pain.
This problem can come back while your child is still growing, but it should stop when your child's growth spurt ends. Osgood-Schlatter disease may leave a painless bump on the bone that remains after the problem has gone away.