Osgood-Schlatter Disease: Why Your Child’s Knee Hurts
Your child finishes soccer practice and points to the front of their knee.
“It hurts right here.”
Not behind the kneecap. Not along the side of the knee. The pain is centered on the hard bump just below it.
For growing children and teenagers, one possible reason is Osgood-Schlatter disease, a common cause of knee pain during adolescence.
Osgood-Schlatter disease causes irritation where the patellar tendon attaches to the shinbone at the tibial tubercle—the bony bump just below the kneecap. It often becomes noticeable during a growth spurt, especially in young athletes who run, jump, cut, or change direction frequently.
The condition usually doesn't require surgery, and many young athletes can remain active while symptoms are managed. Still, not every child's knee pain is Osgood-Schlatter disease. Knowing where the pain is coming from—and why—matters.
Key Takeaways
Osgood-Schlatter disease is a common cause of knee pain in growing children and adolescents.
Pain is usually centered over the bony bump just below the kneecap.
Running, jumping, squatting, kneeling, and other activities may make the pain worse.
The condition is related to repeated stress where the patellar tendon attaches to the growing shinbone.
Treatment is usually nonsurgical and may include activity modification, ice, stretching, strengthening, physical therapy, and other symptom-management strategies.
Children don't always have to stop sports completely, but activity may need to be reduced when pain becomes significant or causes a limp.
Symptoms generally improve once growth is complete, although the bump below the knee may remain.
Persistent or unusual knee pain should be evaluated to make sure something else isn't causing the symptoms.
What Is Osgood-Schlatter Disease?
Osgood-Schlatter is one of several growth-related problems that pediatric orthopedic care may evaluate in children and adolescents.
It is a condition that affects the area where the patellar tendon attaches to the shinbone - that spot is called the tibial tubercle. You can usually feel it as a small, hard bump on the front of the shin just below the kneecap.
In children and adolescents who are still growing, this area hasn't fully matured. Repeated pulling from the patellar tendon can irritate the developing tissue at the tibial tubercle, causing pain, tenderness, and sometimes swelling.
Osgood-Schlatter disease is especially common around periods of rapid growth. Young athletes who participate in running and jumping sports may notice it more often because those activities repeatedly load the quadriceps and patellar tendon.
Why Does Osgood-Schlatter Happen During a Growth Spurt?
A growing child's knee isn't simply a smaller version of an adult knee. Because bones and growth areas are still developing, young athlete injuries and overuse conditions can look and behave differently than similar problems in adults.
The large quadriceps muscles in the front of the thigh connect to the kneecap. From there, the patellar tendon runs down to the tibial tubercle. Every time your child runs, jumps, kicks, squats, or quickly changes direction, that system generates force.
During a growth spurt, repeated pulling at the still-developing tibial tubercle can make the area irritated and painful. That's why Osgood-Schlatter is generally considered an overuse problem rather than an injury caused by one specific play or collision.
Candice P. Holden, MD, a board-certified orthopedic surgeon with fellowship training in pediatric orthopaedics at Arthritis & Sports, explains that growth can change the way a young athlete's knee responds to repetitive activity:
"Parents are often surprised that knee pain can be related to growth. During a growth spurt, the bones and soft tissues are changing quickly, and repetitive running and jumping can put extra stress on the area just below the kneecap."
What Does Osgood-Schlatter Disease Feel Like?
The location of the pain is one of the biggest clues.
A child with Osgood-Schlatter disease will usually point to the bony bump just below the kneecap, rather than describing vague pain throughout the entire knee.
Common symptoms can include:
pain and tenderness over the tibial tubercle
swelling or prominence around the bump
pain with running or jumping
discomfort while squatting or climbing stairs
pain with kneeling
symptoms that become worse during or after sports
and improvement when activity is reduced
Some children have symptoms in one knee. Others develop them in both.
Why Does My Child's Knee Hurt Below the Kneecap?
Pain just below the kneecap can come from several structures, so location alone doesn't provide a diagnosis.
With Osgood-Schlatter disease, the tenderness is typically concentrated over the tibial tubercle where the patellar tendon attaches to the shinbone.
Pain around or behind the kneecap may point toward a different problem, such as patellofemoral pain. Other tendon, growth-related, traumatic, or joint conditions can also cause anterior knee pain in children and adolescents.
That's why it helps to pay attention to exactly where your child hurts, when the pain happens, and which movements make it worse.
Is the Bump Below My Child's Knee Normal?
Everyone has a tibial tubercle. With Osgood-Schlatter disease, however, that area may become swollen or noticeably more prominent.
Even after the pain goes away, the bump may remain larger than it was before. That doesn't necessarily mean the condition is still active. AAOS notes that the prominence may persist after a child finishes growing.
How Is Osgood-Schlatter Disease Diagnosed?
Osgood-Schlatter disease can usually be diagnosed from the child's symptoms and a physical examination. The doctor will ask where the pain is located, when it started, which activities bring it on, and whether anything makes it feel better.
During the examination, the physician may press over the tibial tubercle and evaluate knee motion. Your child may also be asked to walk, squat, jump, or perform another movement that helps reproduce the symptoms.
When the history and examination are typical, an X-ray isn't always necessary.
Does My Child Need an X-Ray?
Not every child with suspected Osgood-Schlatter disease needs an X-ray.
AAOS notes that the diagnosis is usually clinical and that X-rays are generally reserved for situations in which the physician has another concern about the knee pain.
Imaging may be more useful when symptoms aren't typical, there was a significant injury, or the physician wants to evaluate another possible cause of the pain.
The decision should be based on the individual child, rather than an automatic rule that every painful knee needs imaging.
If imaging is appropriate, Arthritis & Sports offers onsite digital X-ray services as part of orthopedic evaluation.
How Is Osgood-Schlatter Disease Treated?
Treatment is usually nonsurgical.
The goal isn't simply to make a young athlete stop everything until they finish growing. It's to reduce irritation, manage symptoms, and help them stay as active as their knee comfortably allows.
Depending on the child, treatment may include a combination of things:
changing or temporarily reducing painful activities
applying ice after activity
improving quadriceps and hamstring flexibility
strengthening the muscles around the knee and hip
physical therapy when needed
a patellar tendon strap for selected athletes
appropriate over-the-counter medication when recommended by a healthcare professional
Conservative treatment is the main approach recommended by pediatric and orthopedic organizations. For young athletes, Dr. Holden says treatment is often about finding the right balance between managing symptoms and staying active:
"The goal usually isn't to shut a child down completely. We want to find the right level of activity, address tightness or weakness, and keep pain from changing the way they're running, walking, or participating."
Does My Child Have to Stop Playing Sports?
Not necessarily.
A diagnosis of Osgood-Schlatter disease doesn't automatically mean the season is over. AAOS notes that children can generally participate in activities as tolerated and that continued participation itself does not cause long-term knee damage.
But “as tolerated” matters.
If your child starts limping, has significant pain, changes the way they move, or can no longer participate comfortably, reducing or temporarily stopping the aggravating activity may be appropriate.
The decision should be based on symptoms and function—not simply whether a game is on the schedule.
Can Physical Therapy Help Osgood-Schlatter Disease?
Physical therapy can be useful when flexibility, strength, or movement mechanics are contributing to symptoms.
A therapy program may work on:
quadriceps flexibility
hamstring flexibility
hip and leg strength
movement control
gradual loading
and a safe return to sports
Physical therapy isn't necessary for every child. For those who need more help controlling symptoms or returning to activity, however, it can provide a structured plan.
Does a Knee Strap Help Osgood-Schlatter Disease?
A patellar tendon strap may help some young athletes.
The strap sits below the kneecap and can change how force is distributed through the patellar tendon. Both AAOS and the American Academy of Pediatrics include patellar straps among options that may relieve symptoms for some patients.
A brace or strap shouldn't replace an accurate diagnosis, activity management, flexibility, or strengthening.
How Long Does Osgood-Schlatter Disease Last?
There isn't one recovery timeline. Some children improve relatively quickly when training is adjusted. Others have symptoms that come and go during a longer period of growth.
Osgood-Schlatter disease is considered self-limited because symptoms generally resolve once the growth area matures and the child completes the adolescent growth spurt.
That can be frustrating for a young athlete who wants a specific date on the calendar.
Rather than focusing only on how many weeks have passed, it can be more useful to watch whether pain is becoming easier to manage and whether your child can move, practice, and compete without compensating.
Does Osgood-Schlatter Disease Require Surgery?
Almost never in a growing child.
Most cases are treated without surgery and improve as growth is completed. AAOS notes that surgery is rarely recommended because symptoms typically resolve after the adolescent growth spurt.
A small number of people may continue to have symptoms after skeletal maturity, particularly when a persistent bony fragment or prominence remains painful. Those situations are different from the typical case in a growing athlete and need an individualized evaluation.
When Should My Child See a Pediatric Orthopedic Specialist?
Not every sore knee requires a specialist visit. Still, an evaluation can be helpful when pain keeps returning, doesn't improve with reasonable activity changes, or starts affecting the way your child moves.
Growing athletes can develop several different pediatric sports injuries, including fractures, growth plate problems, sprains, and overuse conditions. Consider having the knee evaluated if your child:
develops a persistent limp
has pain that significantly limits sports or normal activities
experiences substantial pain even at rest
has significant or unusual swelling
has knee pain following a more serious injury
cannot comfortably bear weight
has symptoms that don't fit the typical pattern of Osgood-Schlatter disease
or simply isn't improving as expected
An evaluation doesn't mean your child will need imaging, a brace, or a lengthy break from sports. Sometimes the most useful part of the visit is confirming the diagnosis and helping the family understand how to manage activity safely.
Dr. Holden also cautions parents against assuming that every ache during a growth spurt is simply something a child will outgrow:
"Knee pain in a growing athlete is common, but it shouldn't automatically be dismissed as growing pains. If the pain is persistent, causing a limp, or changing how a child participates, it's worth figuring out exactly where it's coming from."
Pediatric Knee Pain Care in Sterling and South Riding, VA
Candice P. Holden, MD, is a board-certified orthopedic surgeon with fellowship training in pediatric orthopaedic surgery and more than 20 years of experience treating orthopedic conditions in children and adolescents.
Her expertise includes pediatric sports injuries, growth plate conditions, fractures, joint pain, and other musculoskeletal problems that can affect growing patients. Dr. Holden sees patients at Arthritis & Sports Orthopaedics in both Sterling and South Riding.
If your child has persistent knee pain below the kneecap, a limp, difficulty playing sports, or another orthopedic concern, an evaluation can help identify the cause and determine what—if anything—needs to change.
Frequently Asked Questions About Osgood-Schlatter Disease
What Causes Osgood-Schlatter Disease?
Osgood-Schlatter disease develops when repeated pulling from the patellar tendon irritates the developing area at the tibial tubercle just below the knee. It is especially common during growth spurts and may be aggravated by running, jumping, and other repetitive sports activity.
Is Osgood-Schlatter Disease a Growth Plate Problem?
It involves a developing attachment area at the tibial tubercle in a growing child. Because this area has not yet fully matured, repetitive traction from the patellar tendon can cause pain and irritation.
Can My Child Play Sports With Osgood-Schlatter Disease?
Many children can continue participating in sports as tolerated. Activity may need to be reduced if pain becomes significant, causes a limp, alters movement, or prevents comfortable participation. Your child's physician can help determine an appropriate activity level.
Does Osgood-Schlatter Disease Go Away?
In most children, symptoms improve once growth is completed and the area at the tibial tubercle matures. Symptoms can fluctuate during the growth period, so improvement isn't always immediate.
Does My Child Need an X-Ray for Osgood-Schlatter Disease?
Usually not when the history and examination are typical. A physician may order an X-ray if symptoms are unusual, there has been an injury, or another cause of knee pain needs to be considered.
Does the Bump From Osgood-Schlatter Go Away?
The pain and irritation usually improve, but the bony prominence below the kneecap may remain noticeable even after the child finishes growing.
Can Physical Therapy Help Osgood-Schlatter Disease?
Yes, for some children. Physical therapy may address tight quadriceps or hamstrings, strength, movement mechanics, and gradual return to activity. Not every child requires formal therapy.
How Long Does Osgood-Schlatter Disease Last?
There isn't one set duration. Symptoms may improve with activity modification or come and go during a child's growth period. The condition generally resolves after skeletal growth is completed.
Is Osgood-Schlatter Disease Serious?
It is usually a self-limited condition and is most often managed without surgery. However, persistent or unusual knee pain should be evaluated so another injury or condition isn't missed.
Does Osgood-Schlatter Disease Require Surgery?
Surgery is rarely required. Most children improve with nonsurgical treatment and eventually outgrow the painful phase as skeletal growth is completed.
