Pediatric Pars Fracture (Spondylolysis)
A stress fracture in the lower spine that is a common cause of persistent back pain in young athletes—especially those involved in sports that require repeated bending, twisting, or arching of the back.
Quick Answer
A pediatric pars fracture, also called spondylolysis, is a stress fracture in a small area of the lower spine. It is one of the most common identifiable causes of persistent lower back pain in young athletes. When diagnosed early, many pars fractures heal with activity modification, bracing when appropriate, and physical therapy—allowing most young athletes to return to their sport.
Real Patient Case
See How a Pediatric Pars Fracture Can Be Repaired Without Fusion
A 16-year-old competitive soccer player with persistent back pain and bilateral L5 pars fractures underwent a minimally invasive, robotic-guided direct pars repair. The procedure preserved motion, required only small incisions and allowed the patient to return home the same day.
View the Pediatric Pars Repair Case Study →Key Takeaways
- A pediatric pars fracture is a stress fracture in the growing spine, also called spondylolysis.
- It is a leading identifiable cause of lasting lower back pain in young athletes.
- Early diagnosis improves the chance of the fracture healing.
- Treatment usually involves rest, bracing, and a structured therapy program.
- Most children return to sport after appropriate recovery.
At a Glance
| What it is | Stress fracture of the pars in a child or adolescent |
|---|---|
| Common cause | Repetitive back extension in sports |
| Most common level | L5 |
| Typical symptoms | Activity-related lower back pain |
| Early detection | Improves the likelihood of bony healing |
| First-line treatment | Activity rest, bracing, physical therapy |
Symptoms
A pediatric pars fracture typically causes lower back pain that develops gradually and worsens with sports and activities that arch the back. The pain usually eases with rest. Parents and coaches may notice a young athlete favoring the back, losing flexibility, or complaining of pain during a season.
Because young athletes may minimize symptoms to keep playing, back pain in a child that lasts more than a few weeks deserves evaluation. Tight hamstrings and reduced back flexibility are common associated findings.
Which Athletes Are Most at Risk?
Pars fractures are most common in sports that repeatedly stress the lower back through bending, twisting, or arching. Gymnastics, football, soccer, wrestling, cheerleading, dance, and diving are among the sports commonly associated with these injuries.
Pars fractures can occur in athletes from any sport, particularly during periods of rapid growth or intensive training.
Common Warning Signs
- Lower back pain in a young athlete lasting more than a few weeks
- Pain worse with sports and back extension
- Relief with rest
- Reduced flexibility or tight hamstrings
- Favoring the back during activity
When to Seek Care Promptly
- Leg pain, numbness, or weakness
- Pain that steadily worsens
- Night pain or pain at rest
- Any change in bladder or bowel control
- Pain following a significant injury
Diagnosis
Diagnosing a pars fracture starts with understanding when the pain occurs, the athlete’s sport and training history, and a physical examination. Imaging can then help confirm the diagnosis and determine whether the fracture is actively healing.
MRI is often used first in children and adolescents because it can identify early stress reactions without radiation. X-rays may show an established pars defect, while CT can provide a more detailed view of the bone when needed.
Identifying a pars stress injury early is important because treatment during the early stages may give the fracture a better opportunity to heal.
Treatment
Treatment typically begins with rest from the aggravating sport, along with a structured physical therapy program to restore core strength and flexibility. Bracing is often used in children with an acute stress fracture to support healing. Pain typically improves over a period of weeks to months.
Return to sport is gradual and guided by symptoms and, in some cases, imaging. Surgery is not always needed and is reserved for case of persistent pain despite thorough conservative care or significant slippage. At Atlantic Brain and Spine, such cases are reviewed through the spine board.
When Is Surgery Considered?
Most pediatric pars fractures do not require surgery. Surgery may be considered when a fracture does not heal despite appropriate conservative treatment and the athlete continues to have significant pain or cannot safely return to activity.
For carefully selected patients, direct pars repair may be an alternative to spinal fusion. The procedure repairs and stabilizes the fracture while preserving movement at the affected spinal level.
The Diagnosis-to-Treatment Pathway
1. Evaluation
Persistent activity-related back pain in a young athlete is assessed.
2. Targeted Imaging
MRI is often used first to identify a stress reaction or fracture; X-ray or CT may provide additional detail when needed.
3. Activity Rest
Stopping the aggravating sport allows the fracture to settle and heal.
4. Bracing When Indicated
A brace may support healing of an acute fracture.
5. Physical Therapy
Core and flexibility work rebuild support for the spine.
6. Graded Return to Sport
Play resumes progressively as symptoms allow.
7. Surgical Review if Needed
Rare persistent cases or slippage prompt spine board review.
Pars Fractures in Young Athletes
What parents should know about symptoms, treatment and returning to sports.
A Fusion-Free Option for Selected Pars Fractures
Direct pars repair can preserve motion and avoid spinal fusion in appropriately selected young patients. Dr. Musharbash performed New Jersey’s first outpatient, minimally invasive robotic pediatric pars repair.
Learn About Direct Pars Repair →
Frequently Asked Questions
Spondylolysis is one of the most common identifiable causes of persistent lower back pain in adolescent athletes. It is especially frequent in sports that involve repeated back extension and rotation, such as gymnastics, diving, football, and wrestling.
A period of rest from the aggravating sport is usually the most important part of treatment, as it allows the stress fracture to settle and, ideally, heal. The rest period is temporary, and most children return to sport after a structured recovery.
Yes, particularly when caught early. Acute stress fractures in young patients have a good chance of healing with rest and, often, bracing. Some fractures do not fully heal on imaging but still become pain-free. Early diagnosis improves the odds of bony healing.
MRI can detect early stress reactions before a full fracture develops and does not use radiation, which is an advantage in children. CT gives the most detailed picture of an established bony fracture and may be used when more detail is needed.
The great of pediatric pars fractures are managed successfully with rest, bracing, and therapy. Surgery is reserved for the rare case of persistent, limiting pain despite thorough conservative care or significant slippage.
Recovery varies but often spans a few months, with pain improving over weeks and a gradual, symptom-guided return to sport thereafter. Consistent rest and completion of the therapy program give the best results.
Yes. There is more and more research showing that healed pars fractures are associated with better functional and pain outcomes and a lower risk of disc degeneration and slippage in the future.
If a pars fracture does not heal within 3–6 months, direct repair can be an excellent outpatient option that preserves motion and helps protect the future health of the spine. However, if significant degeneration or slippage has already developed, direct repair may no longer be an option and fusion may become necessary.
Specialized Pars Fracture Care for Young Athletes
Young athletes and their families travel from across New Jersey and around the country to see Farah Musharbash, MD, for specialized evaluation and treatment of pars fractures. Her approach emphasizes preserving motion and helping young patients return safely to the activities and sports they love.
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