Pediatric Fractures
How children's bones heal differently, and what every parent should know about growth plate injuries, treatment timelines, and when to seek emergency care.
How Children's Bones Are Different
A child's skeleton is not simply a smaller version of an adult's. Growing bones have unique properties that affect how fractures occur, how they heal, and what treatments work best.
More Porous Structure
Children's bones are more porous and less dense than adult bone. This makes them more flexible but also means they can fracture in unique patterns, like greenstick fractures where the bone bends and cracks on one side without breaking completely through.
Growth Plate Vulnerability
The growth plate (physis) is the weakest part of the pediatric skeleton. These cartilage zones at the ends of long bones are where growth occurs, and they are 2 to 5 times weaker than surrounding bone or ligaments. Injuries here require careful monitoring.
Faster Healing
Children's fractures heal significantly faster than adult fractures. A fracture that takes 12 weeks in an adult may heal in just 4 to 6 weeks in a child. Younger children heal even faster, with infants healing in as little as 2 to 3 weeks.
Remodeling Capacity
Growing bones can remodel, meaning they gradually correct some degree of angular deformity over time. This is why pediatric orthopedists may accept alignment that would require surgery in an adult. Younger children have greater remodeling potential.
Growth Plate Injuries
The Salter-Harris classification system describes five types of fractures involving the growth plate (physis). The type determines treatment urgency and risk of growth disturbance.
Through Growth Plate
Fracture runs entirely through the growth plate, separating the epiphysis from the metaphysis. Often no visible fracture on X-ray. Diagnosed by tenderness over the growth plate.
Growth Plate + Metaphysis
The most common growth plate fracture (75% of cases). Fracture extends through the growth plate and exits through the metaphysis, creating a triangular bone fragment (Thurston-Holland).
Growth Plate + Epiphysis
Fracture crosses the growth plate and extends into the joint surface through the epiphysis. Requires anatomic reduction because the joint surface is involved. Often needs surgical fixation.
Through All Three
Fracture crosses the epiphysis, growth plate, and metaphysis. Always requires surgical fixation with precise alignment. Risk of growth arrest if the growth plate is not perfectly restored.
Crush Injury
Compression (crush) injury to the growth plate. Rare and often not visible on initial X-rays. Usually diagnosed retrospectively when growth disturbance becomes apparent months later.
Common Pediatric Fractures
Children are most active between ages 5 and 14, and their fracture patterns reflect the activities and anatomy of growing bones.
Forearm Fractures
Most common pediatric fracture
Account for roughly 40% of all childhood fractures. Usually occur from falling on an outstretched hand (FOOSH). The distal radius is the single most-fractured bone in children. Both-bone (radius and ulna) fractures are common in the mid-shaft.
Supracondylar Humerus
Elbow fracture
The most common elbow fracture in children, typically from a fall on an outstretched arm with the elbow extended. Requires careful neurovascular assessment because the brachial artery and nerves pass close to the fracture site.
Torus (Buckle) Fractures
Wrist
A compression fracture where the cortex buckles outward without breaking through. Unique to children because of their porous bone. Very stable and heals quickly. Treated with a removable splint rather than a full cast in many cases.
Greenstick Fractures
Incomplete break
The bone bends and cracks on the tension (outer) side but does not break all the way through. Named for the way a green twig bends and splinters rather than snapping cleanly. Can occur in any long bone but most common in the forearm.
Clavicle Fractures
Collarbone
Very common from falls onto the shoulder or outstretched hand. Also common in contact sports and cycling accidents. Almost always heal without surgery in children. A visible bump may remain during healing but remodels over months.
ER vs Urgent Care
A parent's guide to where to go when your child has a possible fracture. Use this decision guide to help determine the right level of care.
- Bone is visible through the skin (open fracture)
- The limb looks deformed, bent, or shortened
- Fingers or toes are numb, white, blue, or cold
- Severe swelling that developed within minutes
- Unable to move the joint above or below the injury
- Injury to the head, neck, or spine at the same time
- Child is in severe pain that is not improving
- Injury from a high-energy event (car accident, fall from height)
- Pain and swelling but no visible deformity
- Child can wiggle fingers/toes and sensation is normal
- Mild to moderate pain, manageable with ice and support
- Suspected buckle or hairline fracture
- Isolated finger or toe injury
- Child is calm and not in distress
Treatment Differences in Children
Pediatric fracture treatment takes advantage of children's rapid healing and remodeling capacity. Here is what makes it different from treating adult fractures.
Shorter Casting Times
Children typically wear casts for 3 to 6 weeks compared to 6 to 12 weeks in adults. Younger children heal fastest. An infant's fracture may need only 2 to 3 weeks of immobilization. Casts are removed once X-rays confirm adequate healing.
Surgery Is Less Common
Because of remodeling capacity, many fractures that would require surgery in adults can be treated conservatively in children. Surgery is reserved for displaced growth plate fractures (Salter-Harris III/IV), unstable fractures, and open fractures.
Waterproof Cast Options
Waterproof cast liners (such as Gore-Tex liners) are available for stable fractures and allow children to bathe and even swim. Not suitable for all fractures, but they significantly reduce the inconvenience of casting, especially in summer months.
School and Activity Considerations
Most children can return to school within a few days of a fracture. Modifications may include a writing aid for dominant-hand injuries, elevator access, and excusal from PE. Return to sports is typically allowed 4 to 6 weeks after cast removal, with gradual progression.
Physical Therapy Is Rarely Needed
Unlike adults, most children regain full range of motion and strength through normal play and activity after cast removal. Formal physical therapy is only prescribed for complex injuries, joint involvement, or prolonged immobilization exceeding 8 weeks.
Pain Management
Children's pain is managed primarily with ibuprofen and acetaminophen. Opioids are rarely needed and used only for the first 24 to 48 hours after severe fractures or surgery. Elevation, ice, and distraction techniques (screens, games) are effective adjuncts.
Growth Plate Monitoring
After a growth plate injury, follow-up monitoring is essential to detect growth disturbance early. The schedule depends on the Salter-Harris type and the child's remaining growth.
Initial Follow-Up
Repeat X-rays to confirm alignment is maintained. For casted fractures, check for swelling changes. Assessment of pain control and neurovascular status.
Healing Confirmation
X-rays to confirm fracture union. Cast removal if healed. Begin gentle range-of-motion exercises through normal activity. Most children return to school activities at this stage.
Early Growth Check
Comparison X-rays of both the injured and uninjured side. Look for Harris growth arrest lines (lines parallel to the growth plate that should appear smooth and symmetric). Any asymmetry triggers closer monitoring.
Growth Plate Assessment
Repeat comparison X-rays. Measure limb length. For Salter-Harris III/IV/V injuries, MRI may be ordered to evaluate the growth plate directly. This is when most growth disturbances first become visible.
Long-Term Surveillance
Annual monitoring until skeletal maturity for severe injuries (Salter-Harris III through V). Limb-length measurements at each visit. Growth disturbance occurs in approximately 10% of growth plate fractures, with Type V carrying the highest risk. If arrested growth is detected, surgical options include bone bridge resection or epiphysiodesis.
Supporting Your Child's Recovery
Most pediatric fractures heal completely with proper treatment and follow-up. Children are remarkably resilient, and their bones have a natural ability to repair and remodel that adults do not share.
The key to a good outcome is appropriate initial treatment, adherence to activity restrictions during healing, and completing all recommended follow-up appointments, especially for injuries near growth plates.
This content is for informational purposes only and does not replace professional medical advice. Pediatric fracture treatment decisions should be made in consultation with a board-certified pediatric orthopedic surgeon. If your child has sustained an injury, seek medical attention promptly.