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Spondylolysis

A stress fracture of the pars interarticularis, most commonly affecting young athletes with repetitive lumbar extension.

Written by: Saygı Hospital Health Guide Editorial Board
Published:

This content is for general information; please consult your physician for diagnosis and treatment.

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Ortopedi ve Travmatoloji department. Book Appointment →

What is Spondylolysis?

Spondylolysis is a fatigue-type stress fracture of the pars interarticularis, the bony bridge connecting the superior and inferior articular processes. It is most prevalent at L5 (85–95%) and may be unilateral or bilateral. Bilateral defects predispose to forward slippage of the affected vertebra (isthmic spondylolisthesis).

It is most common in adolescents (especially gymnasts, dancers, divers, cricket bowlers, soccer players, weightlifters) but also occurs in young adults with lumbar overuse. Genetic predisposition is supported by a higher prevalence in some indigenous populations and familial clustering.

Imaging includes lumbar X-ray (oblique view, Scotty-dog sign), with MRI as the preferred initial diagnostic test in young athletes for early stress reaction; CT confirms cortical defect; SPECT/CT or MRI with fat suppression assesses fracture activity.

Symptoms

Activity-related low back pain, often unilateral
Pain worsened by lumbar extension and rotation
Mild radiation to buttock or proximal thigh
Tightness in hamstrings
Reduced trunk extension range of motion
Tenderness to palpation over the affected lumbar level
Asymptomatic in some patients (incidental finding)

Risk Factors

Adolescent age (10–15 years) and incomplete vertebral ossification
Sports with repetitive extension and rotation
Lumbar hyperlordosis, tight hip flexors, weak core
Spina bifida occulta at the affected level
Family history
Inadequate training progression and recovery

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Persistent activity-related low-back pain in a young athlete >2–3 weeks
  • Pain that interferes with sport, sleep, or school
  • Neurological symptoms: leg weakness, numbness, bowel/bladder change (urgent)
  • Suspected slippage or progressive symptoms in known spondylolysis

Treatment Methods

01
Activity restriction: cessation of provocative sports for 6–12 weeks based on imaging
02
Lumbosacral bracing (for active stress reaction or acute fracture) for 6–12 weeks in selected cases
03
Structured physical therapy: core stabilization, hip flexor stretching, lumbar neutral training
04
Gradual return-to-sport progression based on symptom resolution and imaging healing
05
Pain control: NSAIDs short-term, avoid prolonged use
06
Surgical fixation considered for: persistent symptoms >6 months despite conservative treatment, progressive slippage, or neurologic deficit
07
Procedures range from direct pars repair (Buck screws, modified Scott wiring, Morscher hook) to lumbar fusion with spondylolisthesis
08
Long-term: continued lumbar conditioning, monitoring for slippage, modified training in high-risk sports

Which Department to Visit?

You can visit our Ortopedi ve Travmatoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.