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Olympus Lifestyle Co

Condition

Osgood-Schlatter Disease

Knee pain and a tender bump below the kneecap in a growing teenager? Activity modification and strengthening that keep young athletes playing, with clear reassurance for parents.

Osgood-Schlatter disease is one of the most common reasons a sporty young teenager complains of knee pain. It shows up as an ache and tender bump just below the kneecap, usually during a growth spurt, and it’s often worse with running, jumping, kneeling and sports like football, basketball, netball and gymnastics. It can be frustrating for the whole family, but it’s very manageable, and active, strength-based care helps most young people keep playing.

Understanding Osgood-Schlatter disease

During growth, the bones lengthen faster than the muscles and tendons can keep up, and the growth plate at the top of the shin bone is softer than fully formed bone. The strong pull of the quadriceps through the patellar tendon at that spot irritates the area, particularly with lots of running and jumping, leading to pain and, over time, a prominent bony bump.

It’s most common between about 10 and 15, tends to affect boys at slightly older ages than girls because of the timing of growth spurts, and can affect both knees. Reviews describe it as typically self-limiting, but symptoms can last until growth finishes.

Symptoms we commonly see

  • Pain and tenderness at the bump just below the kneecap, usually on one or both knees
  • Pain with running, jumping, squatting, kneeling and stairs
  • A swollen or prominent bump over the top of the shin
  • Pain that eases with rest and returns with activity
  • Tightness in the thigh muscles
  • Pain that varies with growth spurts and training load

Our evidence-based approach

There’s a lack of strong research comparing treatments, but a 2020 prospective study of 51 adolescents supports an active approach: education on activity modification using an activity ladder to manage load on the patellar tendon, knee-strengthening exercises and a gradual return to sport. Our approach includes:

  1. Assessment to confirm Osgood-Schlatter disease and rule out other causes of knee pain in a growing child
  2. Education for the young person and parents, covering what’s happening, why it’s not harmful to the knee, and what to expect
  3. Load management, using a simple activity ladder to adjust running, jumping and training volume to a level the knee tolerates
  4. Progressive knee and leg strengthening, to build the capacity of the muscles and tendon
  5. Flexibility and movement work where tight muscles are contributing
  6. Pain relief strategies that help during flare-ups, such as short-term taping or padding for kneeling
  7. Gradual return to full sport, with a plan for managing training load through growth spurts

See our knee pain page for other causes of knee pain, and our strength and conditioning service for supervised strength training.

What to expect: recovery timeline

  • First few weeks: pain often becomes more manageable with load changes and early strengthening
  • Around 12 weeks: most young people in the study above reported meaningful improvement, with return to sport increasing over the following months
  • Until growth finishes: symptoms can come and go, and some people are left with a permanent bump that’s usually painless

When to seek help urgently

Seek prompt assessment if your child’s knee pain started with a sudden injury or a pop, if they can’t straighten the knee or put weight through the leg, or if the knee is hot, red and swollen. Night pain, constant pain at rest, a limp, or pain with fever or feeling unwell also need review.

References

How We Treat This

Sports PhysiotherapyPhysiotherapyStrength and Conditioning

Q & A

Questions about Osgood-Schlatter Disease

What is Osgood-Schlatter disease?

It's a common cause of knee pain in growing children and teenagers, affecting roughly 1 in 10 adolescents. The patellar tendon pulls on a growth area at the top of the shin bone, called the tibial tuberosity, and the repeated pull during growth spurts makes it sore, tender and often a little swollen. Despite the name, it isn't a disease in the usual sense, and it's linked to activity and growth.

Does my child have to stop playing sport?

Not necessarily. Rest and avoiding all painful activity are often recommended but aren't well supported. In a study of 51 adolescents aged 10 to 14, a 12-week program of activity modification using an activity ladder, knee strengthening and a gradual return to sport led to 80 percent reporting a successful outcome at 12 weeks and 90 percent at 12 months. We adjust training load rather than stopping sport altogether, unless pain is severe.

Will it go away by itself?

It generally settles as growth finishes, but that can take a long time. Adolescents in that study had had pain for an average of 21 months before the program started. Treatment aims to keep pain manageable and your child active and strong while they grow, rather than waiting it out.

Does my child need an X-ray or scan?

Usually not. Osgood-Schlatter disease is diagnosed from the history and examination, with tenderness over the bump below the kneecap. Imaging is considered if the pain is severe or unusual, or there was a sudden injury, to rule out other problems such as an avulsion fracture.

Is it the same as jumper's knee or runner's knee?

They're related but different. Osgood-Schlatter disease causes pain at the bony bump where the tendon attaches below the kneecap in growing children. Patellar tendinopathy affects the tendon itself, and runner's knee causes pain around or behind the kneecap. See our patellar tendinopathy and runner's knee pages.

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