Osgood-Schlatter in Young Athletes: What Parents Should Know About Knee Pain During Growth
Dr. Mom, Physical Therapist | Raising Whole Athletes
Your athlete comes home complaining that the area just below their kneecap hurts.
Maybe it only bothers them after practice.
Maybe jumping, squatting, running, or kneeling makes it worse.
Or maybe you have noticed a small, tender bump developing at the top of their shin.
For growing athletes, one possible cause is Osgood-Schlatter disease.
Despite the name, Osgood-Schlatter is not an illness or disease in the way most parents think of one. It is a common overuse condition that affects the area where the patellar tendon attaches to the tibia, just below the kneecap.
It is especially common during periods of rapid growth and in athletes participating in sports that involve frequent running and jumping.
The good news?
For most young athletes, Osgood-Schlatter can be managed successfully.
But simply telling an athlete to “push through it” is usually not the best approach.
What Is Osgood-Schlatter?
Osgood-Schlatter causes pain and tenderness at the tibial tuberosity, the small bump at the top of the shinbone just below the knee.
The quadriceps muscle on the front of the thigh connects to the kneecap, and the patellar tendon continues from the kneecap down to the tibial tuberosity.
Every time your athlete runs, jumps, squats, kicks, or changes direction, the quadriceps creates force through this area.
In a growing athlete, that attachment site is still developing.
Repeated pulling on the area can make it irritated and painful.
This is why Osgood-Schlatter is often seen in active children and adolescents during growth spurts, particularly those participating in sports with significant running and jumping.
What Does Osgood-Schlatter Feel Like?
The most common complaint is pain directly below the kneecap.
Parents may also notice:
Tenderness over the bump at the top of the shin
Swelling below the knee
A more noticeable or prominent bump
Pain with running
Pain with jumping
Pain with squatting
Pain with kneeling
Increased discomfort after practices or games
Improvement with rest
Symptoms can occur in one knee or both knees.
For some athletes, it may only be mildly uncomfortable after activity.
For others, the pain can become significant enough to affect running, jumping, walking, or everyday activities.
Why Does It Often Show Up During Growth Spurts?
Growth changes more than your athlete's height.
Bones may lengthen rapidly while the muscles and tendons surrounding them are adapting to those changes.
That can temporarily affect:
Flexibility
Coordination
Mobility
Strength
Movement control
How force is distributed through the legs
The quadriceps, hamstrings, and hip muscles may feel tighter during periods of rapid growth.
At the same time, your athlete may still be practicing several days per week, playing multiple games, attending skills sessions, and participating in additional training.
That combination of growth + repetitive loading + limited recovery can contribute to irritation around the tibial tuberosity.
This is another reason parents should pay attention not only to how much their athlete is practicing, but also to what is happening with their growing body.
Sports That Commonly Aggravate Osgood-Schlatter
Osgood-Schlatter can occur in many active children, but symptoms are especially common in sports involving repetitive running, jumping, squatting, or quick changes of direction.
That can include:
Basketball
Soccer
Volleyball
Track
Football
Gymnastics
Dance
Baseball
Other running and jumping sports
The sport itself is not necessarily the problem.
The bigger issue is often the total amount of stress being placed on the knee.
An athlete may have team practice three nights per week, games on the weekend, PE at school, private training, and additional workouts at home.
Each activity may look reasonable on its own.
But the body experiences the total workload.
Does My Athlete Have to Stop Playing?
Not necessarily.
This is where parents should avoid two extremes:
“They have knee pain, so they cannot do anything.”
and
“It is just Osgood-Schlatter, so they should push through it.”
Neither approach considers the individual athlete.
Many athletes can continue participating while symptoms are managed through appropriate activity modification.
That may mean temporarily reducing:
Running volume
Jumping
Deep squatting
Extra conditioning
Additional practices
Tournament volume
Activities that consistently aggravate the knee
The amount of modification needed depends on symptom severity.
If an athlete is limping, changing how they run, struggling with daily activities, or experiencing progressively worsening pain, that deserves more attention than mild soreness after activity.
Sports medicine recommendations commonly include reducing aggravating activity, using ice for symptom relief, and addressing flexibility and strength.
Pain Should Guide the Conversation
Young athletes sometimes assume that pain is simply part of becoming better.
Parents and coaches can unintentionally reinforce that idea.
But there is a difference between normal muscular fatigue from training and pain coming from an irritated growth-related structure.
Your athlete does not earn toughness points for ignoring worsening knee pain.
Instead, teach them to recognize what their body is telling them.
Ask questions such as:
Does it hurt during activity?
Does it get worse as practice continues?
Does the pain last after practice?
Does it hurt the next morning?
Are you changing the way you run or jump?
Does walking or climbing stairs hurt?
Is the pain gradually getting worse?
That information can help determine whether the athlete's current workload needs to change.
What Can Help Osgood-Schlatter?
There is no single exercise that magically makes Osgood-Schlatter disappear.
Management should look at the whole athlete.
1. Adjust Training Load
This may be the most overlooked piece.
If an athlete is repeatedly irritating the area faster than it can settle down, stretching alone is unlikely to solve the problem.
Look at the entire week.
Not just team practices.
Include:
Games
Practices
PE
Private lessons
Strength training
Conditioning
Camps
Backyard workouts
Sometimes reducing one unnecessary session can make a meaningful difference.
2. Work on Lower-Body Flexibility
Tightness through the quadriceps, hamstrings, and hip muscles is commonly seen in athletes with Osgood-Schlatter.
Gentle flexibility work may help reduce excessive tension around the knee.
This can include appropriate stretching for the:
Quadriceps
Hamstrings
Hip flexors
Calves
Stretching should feel controlled and should not significantly reproduce the athlete's knee pain.
3. Build Strength
Osgood-Schlatter should not automatically mean avoiding strength training.
In many cases, appropriate strengthening can be part of rehabilitation.
Consider the entire lower body:
Glutes
Hips
Quadriceps
Hamstrings
Calves
Core
The goal is not simply to strengthen the painful area.
The goal is to improve how the athlete controls their body and distributes forces during movement.
A physical therapist may use strengthening and flexibility work as part of treatment.
4. Look at Movement Quality
Watch your athlete perform basic movements.
Do their knees collapse inward during a squat?
Do they struggle to control a single-leg position?
Do they land heavily from jumps?
Do they lack hip or trunk control?
Do they favor one side?
Osgood-Schlatter is not simply caused by “bad movement,” and parents should not try to diagnose biomechanical problems from one observation.
But movement quality can be one piece of the bigger picture.
As symptoms improve, sport-specific movement and mechanics may also be addressed during rehabilitation.
5. Give the Body Time to Recover
Recovery matters even more during periods of rapid growth.
Make sure your athlete is getting enough:
Sleep
Food
Protein
Hydration
Rest between demanding sessions
Lower-intensity days
Remember:
The goal is not to remove every stressor.
The goal is to make sure the athlete has enough capacity and recovery to tolerate the stress being placed on their body.
What About Knee Straps?
You may see athletes wearing a small strap directly below the kneecap.
A patellar tendon strap may reduce symptoms for some athletes by changing the amount of stress felt around the tendon and tibial tuberosity.
It can be a useful symptom-management tool.
But it should not become a way to ignore increasing pain while continuing the exact same training volume.
Think of the strap as one potential tool... not the entire treatment plan. Johns Hopkins notes that some athletes find patellar tendon straps helpful for symptom relief.
When Should Your Athlete Be Evaluated?
Not every case of knee pain in a growing athlete is Osgood-Schlatter.
Consider having your child evaluated by a pediatrician, sports medicine provider, physical therapist, or other qualified healthcare professional when:
Pain is significant or worsening
Your athlete is limping
Pain interferes with normal walking
There is significant swelling
The knee locks or gives way
There was a traumatic injury
Pain occurs at rest or is persistent
Your athlete cannot participate normally
Symptoms are not improving with reasonable activity modification
You are simply unsure what is causing the pain
Several different conditions can cause knee pain in young athletes, so persistent symptoms deserve an appropriate evaluation rather than an assumption that every painful knee during a
growth spurt is Osgood-Schlatter.
Will Osgood-Schlatter Go Away?
In most young athletes, symptoms improve as growth progresses and the affected growth area matures.
Some athletes may continue to have a noticeable bump below the kneecap even after the pain resolves.
Surgery is rarely required.
The bigger lesson is that Osgood-Schlatter is not necessarily a reason to panic.
But it is also not something parents have to ignore.
It can be an opportunity to evaluate:
How much is my athlete training?
How well are they moving?
Are they strong enough for their current workload?
Are they recovering adequately?
Has their body changed recently because of a growth spurt?
Those questions matter far beyond one painful knee.
The Growing Athlete Needs a Different Approach
Young athletes are not simply smaller adults.
Their bodies are constantly changing.
Sometimes height increases quickly.
Coordination temporarily looks different.
Muscles feel tighter.
Movement changes.
And yesterday's training load may suddenly feel very different to today's body.
That does not mean we need to protect young athletes from every challenge.
It means their training should grow with them.
If your athlete develops Osgood-Schlatter symptoms, resist the urge to think only about the knee.
Take a look at the bigger picture.
Training.
Strength.
Mobility.
Movement.
Recovery.
Sleep.
And the total demands being placed on their growing body.
Because developing a young athlete means more than getting them through the next practice.
It means helping build a body that can continue to move, train, recover, and perform as they grow.
Build the athlete behind the sport.
Download our free Osgood-Schlatter Parent Quick Guide to learn simple ways to support your athlete while you decide what their next step should be.
Inside the Free Guide
You’ll learn:
Common signs associated with Osgood-Schlatter
What activities may need to be temporarily reduced
How to use ice and relative rest
5 gentle exercises to support strength and flexibility
How to decide whether practice should be modified
When your athlete should be evaluated by a medical professional
A simple progression for returning to sport
*This article is for educational purposes and is not intended to diagnose or treat an injury. Persistent or significant knee pain should be evaluated by an appropriate healthcare professional.
Dr. Mom, Physical Therapist | Raising Whole Athletes
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