Pars Fractures in Young Athletes: When Back Pain Is More Than a Strain
Persistent lower-back pain in a young athlete can be easy to dismiss as soreness. But in some children and teens, repetitive stress on the developing spine can cause a pars fracture—an injury where early recognition can make an important difference.
Back pain isn’t just an adult problem—especially for children and teens who train, compete and repeatedly load their spines while they’re still growing.
For young athletes, lower-back pain is often attributed to a pulled muscle or overuse. Frequently, that’s exactly what it is. But pain that persists, returns with activity or becomes worse with certain movements deserves a closer look.
One possible cause is a pars fracture, also called spondylolysis: a stress injury involving a small section of vertebral bone known as the pars interarticularis. Repetitive extension and rotation can place significant stress on this area of a developing spine.
In some studies, spondylolysis has been identified in a substantial proportion of young athletes evaluated for persistent lower-back pain.
In a growing athlete, persistent back pain shouldn’t simply be written off as part of playing sports. Identifying the source early gives us the best opportunity to treat the injury appropriately and protect the developing spine.Farah Musharbash, MD · Atlantic Brain & Spine
Sports that repeatedly require athletes to arch, twist or load the lower back can place particular stress on the pars. That can include gymnastics, football, soccer, dance, wrestling and other high-demand activities.
The important point for parents and athletes is not that every episode of back pain signals a fracture. It’s knowing when pain has stopped behaving like ordinary soreness.
When should a young athlete’s back pain be evaluated?
A pars fracture often develops gradually rather than from one dramatic injury. Young athletes may continue practicing or competing while assuming the discomfort is routine muscle pain.
Pain that doesn’t resolve with ordinary rest.
Symptoms that return during training or competition.
Discomfort when arching or twisting the lower back.
Pain that begins limiting movement, training or play.
A clinical examination can help determine whether additional imaging is appropriate. Depending on the situation, X-rays, MRI, CT or other imaging may be used to evaluate the pars and determine whether a stress reaction or fracture is present.
A pars stress injury identified before it progresses may have a better opportunity to heal with activity modification and rehabilitation. Persistent pain is worth evaluating rather than repeatedly trying to play through it.
Most pars fractures do not start with surgery.
For many young athletes, the first goal is to give the injured bone an opportunity to heal. Treatment depends on the stage of the injury, the athlete’s symptoms and what imaging shows.
When a pars injury is recognized early, conservative treatment can often allow symptoms to settle and healing to occur. That may mean temporarily stepping away from the activity the athlete is most eager to return to—but the goal is a safe, durable return, not simply getting through the next game or season.
Temporarily reducing movements and sports that repeatedly stress the injured area.
Building core strength, flexibility and mechanics that support the spine as symptoms improve.
Using appropriate non-surgical measures while the injury is given time to heal.
Progressing back to activity based on healing, symptoms, strength and the demands of the athlete’s sport.
The objective is not simply to get a young athlete back onto the field quickly. It’s to help them return with a spine that can tolerate the demands of their sport.Farah Musharbash, MD · Atlantic Brain & Spine
What happens when the fracture doesn’t heal?
Some pars fractures become chronic. The bone may fail to heal, pain may continue despite appropriate rehabilitation, and the athlete may remain unable to return comfortably to the activities that matter to them.
When symptoms persist despite appropriate non-surgical care, surgery may enter the conversation. For a young athlete, however, the question isn’t simply how to stabilize the painful area. It’s also whether normal spinal motion can be preserved.
In selected patients with an isolated pars defect and otherwise healthy anatomy, direct repair of the fracture may offer an alternative to fusing the spinal segment.
Repairing the fracture instead of automatically fusing the spine.
Fusion and direct pars repair solve different problems. When a young patient is an appropriate candidate for direct repair, preserving the natural motion of the spinal segment can be an important consideration—particularly for an athlete who hopes to return to a high level of activity.
Spinal Fusion
Fusion joins adjacent vertebrae to stabilize a spinal segment. It is an important treatment when the underlying condition requires it, but that segment no longer moves normally.
- Stabilizes the affected spinal segment
- Eliminates motion at the fused level
- Appropriate for conditions that require fusion
Direct Pars Repair
In carefully selected young patients, the surgeon repairs and stabilizes the pars defect itself rather than fusing the entire motion segment.
- Targets the pars fracture directly
- Aims to preserve natural segmental motion
- May be appropriate when the disc remains healthy
For appropriate surgical candidates, minimally invasive techniques and robotic navigation can help the surgeon plan and place instrumentation through smaller approaches. The technology is a tool—the treatment decision still begins with the individual athlete, the fracture and the condition of the surrounding spine.
For Nathan, preserving motion meant getting back to the game.
At 16, Nathan Young was competing at an elite level in soccer when persistent lower-back pain began threatening the game he had built his life around. After months without an answer, an MRI finally revealed pars stress fractures at L5.
When Nathan and his mother came to Farah Musharbash, MD, the goal wasn’t simply to treat the fracture. Nathan wanted to continue competing, making preservation of spinal motion an important part of the treatment discussion.
Dr. Musharbash performed a minimally invasive, robotic-assisted bilateral L5 pars repair. Nathan went home the same day. At his three-month follow-up, CT imaging showed complete bony healing and he was cleared to return to play.
“I feel great. I have no pain anymore.”Nathan Young
Getting back to sport is a process, not a date on the calendar.
Whether a pars fracture heals without surgery or requires repair, return to sport should be individualized. Pain, healing, strength, mechanics and the specific demands of the athlete’s sport all matter.
Let the injury recover.
Returning before the injured area is ready can recreate the same stresses that contributed to the problem.
Restore strength and mechanics.
Rehabilitation helps prepare the athlete for the movements, loads and repetition their sport requires.
Progress back gradually.
A staged return allows the athlete and care team to see how the spine responds as activity increases.
Can pars fractures be prevented?
Not every stress injury can be prevented, particularly in sports that repeatedly place the lumbar spine into extension and rotation. But training volume, conditioning, technique, recovery and paying attention to persistent symptoms can all influence how much stress a developing spine absorbs.
One of the most useful things parents, coaches and athletes can do is resist the idea that ongoing pain is simply part of being competitive. Muscle soreness after hard training is one thing. Back pain that keeps returning or changes how an athlete moves deserves attention.
Most back pain in young athletes will not turn out to be a pars fracture. But persistent or activity-related lower-back pain is worth evaluating—especially in sports that repeatedly load, extend or rotate the spine.
Farah Musharbash, MD
Dr. Musharbash treats both adult and pediatric spine conditions, with expertise in minimally invasive and motion-preserving approaches. His work with young athletes includes evaluating pars injuries across the full spectrum of care—from diagnosis and non-surgical treatment to direct pars repair when surgery is appropriate.
Help your young athlete understand what’s causing it.
If back pain is lingering, returning with activity or keeping your child from the sport they love, our spine team can help determine what’s going on and what comes next.
