Growth Plate Fractures in Children: Why Kids' Fractures Heal Differently Than Adults' Sprains
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
TL;DR
Growth plate fractures are breaks through the soft growing tissue near the ends of a child's bones — the weakest part of a young skeleton, weaker even than surrounding ligaments. They most often happen in the fingers, forearm, and lower leg after a fall, sports injury, or accident. Because an untreated or improperly treated fracture can leave a limb shorter or crooked, prompt medical evaluation matters. Most heal fully with a simple cast or splint, and some need surgery; follow-up X-rays over several years confirm the bone kept growing correctly.
Quick Answer
A growth plate fracture is a break through the growth plate — the soft layer of developing tissue near the ends of a child's bones that creates new bone. Growth plates are the weakest part of the skeleton, so injuries that cause sprains in adults often fracture a child's growth plate. Typical signs include pain and tenderness at the end of a bone near a joint, swelling, warmth, and trouble moving or bearing weight. They most commonly occur in the fingers, forearm, and lower leg, usually after falls, sports, or accidents. A doctor diagnoses them with X-rays — often of both limbs for comparison — and treatment ranges from a cast or splint to surgery if the bone is not well-aligned. Proper treatment is important because a poorly treated growth plate fracture can leave a limb shorter or crooked, and doctors typically monitor healing with follow-up X-rays until growth finishes.
What Is a Growth Plate Fracture?
Every child's long bones grow from a special zone of tissue near the ends of the bone, called the growth plate. This soft layer of developing tissue is where new bone is created as a child grows. Once a child finishes growing, these plates harden into solid bone.
Growth plates are the softest and weakest sections of a young skeleton — sometimes even weaker than the surrounding ligaments and tendons. That is why an injury that might cause a joint sprain in an adult can cause a growth plate fracture in a child.
These injuries often need prompt treatment. A growth plate fracture can affect how the bone grows afterward. If it is not treated properly, the healed bone can end up shorter or more crooked than the matching limb on the other side of the body. With proper treatment, most growth plate fractures heal without complications.
Symptoms: What a Growth Plate Fracture Looks Like
Most growth plate fractures occur in the bones of the fingers, the forearm, and the lower leg. The signs are similar to other injuries around a joint, which is part of what makes them easy to miss.
Common signs and symptoms include:
Symptom | What It Looks Like |
Pain and tenderness | Especially painful when pressure is applied directly over the growth plate |
Trouble moving | Inability to move the affected area or to put weight or pressure on the limb |
Warmth and swelling | Warmth and swelling at the end of a bone, near a joint |
When to See a Doctor
If you suspect a fracture, take your child to be examined by a doctor. Also have your child evaluated if you notice a visible deformity in your child's arms or legs, or if your child is having trouble playing sports because of persistent pain.
What Causes Growth Plate Fractures?
Growth plate fractures are most often caused by a fall or a blow to the limb. Typical scenarios include:
Category | Examples |
Accidents | A car accident |
Competitive sports | Football, basketball, running, dancing, gymnastics |
Recreational activities | Biking, sledding, skiing, skateboarding |
Growth plate fractures can also occasionally be caused by overuse. This happens during intensive sports training or repetitive motions such as throwing.
Risk Factors: Who Gets Growth Plate Fractures?
Growth plate fractures occur twice as often in boys as in girls. The reason is simple: girls finish growing earlier. By the age of 12, most girls' growth plates have already matured and been replaced with solid bone, so there is less soft growth-plate tissue left to break.
Factor | Detail |
Age and sex | Twice as common in boys, because girls' growth plates mature earlier |
Typical age window | Most girls' growth plates harden by around age 12; boys' stay soft longer |
Activity level | Sports, recreation, and accidents are the main triggers |
Complications: Why Treatment Matters
Most growth plate fractures heal with no complications. But certain factors increase the risk of crooked, accelerated, or stunted bone growth:
Risk Factor | What It Means |
Severity of the injury | A growth plate that has been shifted, shattered, or crushed carries a greater risk of limb deformity |
Age of the child | Younger children have more years of growth ahead, so permanent plate damage creates more chance of deformity. A child who is almost done growing may see only minimal deformity from the same damage |
Location of the injury | Growth plates around the knee are most sensitive to injury — a knee fracture can make the leg shorter, longer, or crooked. Growth plate injuries around the wrist and shoulder usually heal without problems |
How Is a Growth Plate Fracture Diagnosed?
Diagnosing a growth plate fracture is trickier than a typical broken bone. Because growth plates have not hardened into solid bone, they are difficult to interpret on X-rays.
Here is how doctors approach it:
Diagnostic Approach | How It Works |
Comparison X-rays | Doctors may order X-rays of both the injured limb and the opposite limb so the two can be compared side by side |
Watchful waiting with protection | Sometimes the fracture cannot be seen on X-ray at all. If the child is tender over the growth plate, the doctor may recommend a cast or splint to protect the limb, then repeat X-rays in three to four weeks — by then, new bone healing will typically be visible if a fracture was present |
Soft-tissue scans | For more-serious injuries, MRI, CT, or ultrasound scans that can visualize soft tissue may be ordered |
Treatment: Cast, Splint, or Surgery
Treatment depends on the severity of the fracture.
The least serious fractures usually require only a cast or a splint. Surgery may be necessary if the fracture crosses the growth plate or goes into the joint and is not well-aligned. This matters because growth plates that are surgically realigned may have a better chance of recovering and growing again than growth plates left in a poor position.
Treatment Path | When It Applies |
Cast or splint | The least serious fractures — no surgery needed |
Surgery | When the fracture crosses the growth plate or enters the joint and is not well-aligned |
Long-term monitoring | Follow-up X-rays for several years to confirm the growth plate is growing appropriately, since permanent damage is hard to detect at the time of injury |
One important reality: at the time of injury, it is difficult to tell whether a growth plate has sustained permanent damage. Because of this, doctors may recommend checking X-rays for several years after the fracture to make sure the growth plate is growing appropriately. Depending on the location and severity of the fracture, a child may need follow-up visits until his or her bones have finished growing.
Preparing for Your Appointment
If your child is injured, you may go straight to an emergency room or urgent care clinic. Depending on the severity of the break, the doctor who first examines your child may recommend a consultation with a pediatric orthopedic surgeon.
What you can do before the visit. Write a quick list that includes:
Your child's symptoms
How the injury occurred
Your child's key medical information, including any other medical problems and the names of all medications and vitamins he or she takes
The sports or recreational activities in which your child regularly participates
Questions you want to ask the doctor
What to expect from your doctor. Your doctor may ask:
How did the injury happen?
Where does it hurt?
How much does it hurt?
Does anything relieve the pain?
Was there any pain in the affected area before the injury, such as during sports or recreational activity?
What concerns do you have about your child's return to sports or play?
Have there been previous fractures?
Conclusion
Growth plate fractures are a uniquely childhood injury — they only exist while bones are still growing, and they strike at the weakest point in a young skeleton. The good news is that most heal completely with straightforward care like a cast or splint, and proper treatment gives a realigned growth plate the best chance to keep growing normally. The key for parents is taking any persistent pain, swelling near a joint, or visible deformity seriously and getting a proper evaluation, then staying engaged with follow-up care until growth finishes.
If your child has an injury near a joint that causes pain, swelling, or trouble bearing weight, don't wait to see if it "just improves." Early evaluation protects how your child's bones grow for years to come — explore more condition guides on Rinnit to understand what comes next at every step.
Frequently Asked Questions
What is a growth plate fracture?
A growth plate fracture is a break through the growth plate — the soft layer of growing tissue near the ends of a child's bones that produces new bone. Growth plates are the weakest part of the young skeleton, so injuries that cause sprains in adults often cause these fractures in children.
What are the signs of a growth plate fracture?
Common signs include pain and tenderness, especially when pressure is applied over the growth plate; inability to move the affected area or bear weight on the limb; and warmth and swelling at the end of a bone near a joint. Most occur in the fingers, forearm, and lower leg.
Can a growth plate fracture affect how a child grows?
Yes. If a growth plate fracture is not treated properly, the healed bone can end up shorter or more crooked than the matching limb on the other side. A shifted, shattered, or crushed growth plate carries the greatest risk, and injuries around the knee are the most sensitive to permanent change.
Why are growth plate fractures hard to diagnose?
Because growth plates have not hardened into solid bone, they are difficult to interpret on X-rays. Sometimes the fracture cannot be seen at all — doctors may order X-rays of both limbs for comparison, or protect the limb with a cast or splint and repeat X-rays in three to four weeks to look for new bone healing.
Do all growth plate fractures need surgery?
No. The least serious fractures usually require only a cast or a splint. Surgery may be necessary if the fracture crosses the growth plate or goes into the joint and is not well-aligned — realigning the plate surgically gives it a better chance of recovering and growing again.
How often do growth plate fractures happen in boys versus girls?
They occur twice as often in boys as in girls, because girls finish growing earlier. By around age 12, most girls' growth plates have already matured and been replaced with solid bone, so there is less soft tissue left to break.
Can a growth plate fracture happen without a sudden injury?
Occasionally, yes. Alongside falls and blows to the limb, growth plate fractures can be caused by overuse during sports training or repetitive motions such as throwing.
How long does follow-up care last after a growth plate fracture?
At the time of injury, it is difficult to tell whether a growth plate has permanent damage. Doctors may recommend checking X-rays for several years after the fracture, and follow-up visits may be needed until the child's bones have finished growing.
Which growth plate injuries are most concerning?
Injuries around the knee are the most sensitive — a growth plate fracture at the knee can make the leg shorter, longer, or crooked if the plate is permanently damaged. Growth plate injuries around the wrist and shoulder usually heal without problems.
Can growth plate fractures be prevented?
They result from falls, accidents, sports impacts, and occasionally overuse, so they cannot be fully prevented. Wearing appropriate protective gear during sports and addressing persistent pain during repetitive activities can help catch problems early.
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