Winter sports season is in full swing in the Inland Empire. Gyms in Pomona, Claremont, La Verne, and Chino are packed with youth basketball and volleyball practices, and many club teams play year round. Along with all that jumping and sprinting comes a familiar complaint from growing kids: a sore, swollen bump just below the kneecap. In many cases, the cause is Osgood-Schlatter disease.
The name sounds serious, but Osgood-Schlatter disease is a common and usually harmless condition. According to the American Academy of Orthopaedic Surgeons (AAOS), it is a common cause of knee pain in growing adolescents, and most cases improve with simple care. This guide explains what Osgood-Schlatter disease is, why it happens, how it is treated, and when your child should see a specialist.
What Is Osgood-Schlatter Disease?
Osgood-Schlatter disease is an irritation of the growth plate at the top of the shinbone (tibia). Children's bones have areas of growing cartilage called growth plates. One of these sits under a bony bump just below the knee called the tibial tubercle. The patellar tendon, which connects the kneecap to the shinbone, attaches right there.
When a child runs and jumps, the thigh muscles pull on the patellar tendon, and the tendon pulls on the tibial tubercle. During a growth spurt, bones, muscles, and tendons are all changing quickly. Repeated pulling on this soft growth area can irritate it. Over time, the bump below the knee can become larger and tender.
Common Symptoms
The AAOS lists the main symptoms as knee pain and tenderness at the tibial tubercle, swelling at that spot, and tight muscles in the front or back of the thigh. Pain usually gets worse with running, jumping, kneeling, and climbing stairs, and gets better with rest. One or both knees can be affected.
Who Gets Osgood-Schlatter Disease?
Osgood-Schlatter disease most often happens during the growth spurts of the preteen and early teen years. Kids who play sports with a lot of running, jumping, and quick changes of direction are at the highest risk. These include basketball, volleyball, soccer, track, gymnastics, and dance. Less active kids can get it too.
Why Winter Sports Season Matters
Basketball is one of the classic sports linked to Osgood-Schlatter disease. Jumping for rebounds, landing, and sprinting the court all put repeated stress on the patellar tendon. When a young athlete moves from one season straight into another, or plays on more than one team at once, the knee may not get enough rest. A sudden increase in practices at the start of the season is a common trigger.
Tips for Parents and Coaches
Parents and coaches can help prevent flare-ups. Build in at least one or two rest days each week, and avoid playing on several teams in the same season. Start each practice with a dynamic warm-up and end with stretches for the thighs and calves. Watch for limping, rubbing the knee, or sitting out drills, since kids often do not speak up about pain. Good shoes with cushioning can help on hard gym floors. If a child is in the middle of a growth spurt, it is reasonable to reduce jumping drills for a while and focus on skills that are easier on the knees, such as ball handling and shooting form.
Is It Dangerous?
In most cases, no. The AAOS notes that continued activity will not cause long-term damage to the knee, and it is safe for kids to stay active as tolerated. The goal is to keep pain at a dull ache that does not affect play and fades quickly after activity.
How Osgood-Schlatter Disease Is Treated
Treatment focuses on reducing pain and swelling while letting your child stay as active as possible. Surgery is rarely needed.
Ice and Activity Changes
Ice the bump for about 20 minutes at a time after practice or games, with a cloth between the ice and the skin. If pain is severe, or your child is limping, a short break from running and jumping may be needed. Cutting back on extra practices or a second team can help a lot.
Stretching and Strengthening
Tight thigh muscles increase the pull on the tibial tubercle. The AAOS recommends stretches for the quadriceps and hamstrings several times a day. A physical therapist can teach your child safe stretches and exercises to build hip and leg strength.
Knee Straps and Pads
A patellar tendon strap is a band worn just below the kneecap. It can ease pain during sports by changing how force passes through the tendon. Knee pads can protect the tender bump during sports that involve kneeling or contact with the floor.
Pain Relievers
Over-the-counter medicines such as ibuprofen may reduce pain and swelling for a short time. Check with your child's doctor for the right dose.
How Long Does It Last?
Symptoms can come and go for months, and sometimes longer. According to the AAOS, most symptoms go away completely once a child finishes the adolescent growth spurt, around age 14 for girls and age 16 for boys. The bump below the knee may stay, but it usually stops hurting.
When Should My Child See a Specialist?
Mild Osgood-Schlatter pain can often be managed at home. Make an appointment with an orthopedic specialist if your child's knee pain is severe, if they are limping, or if the pain does not improve after a few weeks of home care. You should also schedule a visit if the pain wakes your child at night, if there is redness or fever, or if the pain is in a different spot from the bump below the kneecap. These signs can point to other problems that need a closer look.
Get care right away if your child cannot straighten the knee or cannot put weight on the leg after a hard landing. In rare cases, a piece of the growth plate can be pulled off, which needs prompt treatment.
A specialist can usually diagnose Osgood-Schlatter disease with a history and physical exam. The AAOS notes that X-rays are not needed for diagnosis and are used only if the doctor has other concerns. Our pediatric orthopedic care team sees young athletes from Claremont, La Verne, Montclair, and across the Pomona Valley at our Pomona office. You can also learn more on our Osgood-Schlatter disease page.
Conclusion
Osgood-Schlatter disease is one of the most common reasons active kids have knee pain, especially during basketball season and growth spurts. It is not dangerous, and most young athletes can keep playing with ice, stretching, a knee strap, and a smart schedule. If your child's knee pain is severe, keeps them from playing, or does not fit the usual pattern, an orthopedic evaluation can give you answers and a plan.
If you're experiencing knee pain in a growing child or a painful bump below the kneecap, the team at Garey Orthopedic Medical Group is here to help. We offer same-day and next-day appointments for new patients. Visit gareyortho.com or call us to schedule today.