The Adolescent with a Painful Scoliosis Curve
A 13-year-old girl is referred for a right thoracic scoliosis noted by her mother. She is premenarchal (Tanner 2 breast development) and has a 38-degree right thoracic curve on standing radiographs. She reports intermittent back pain that wakes her occasionally at night. Examination shows a right thoracic prominence on forward bending, a left shoulder that is lower, and a subtle left thoracic fullness. Neurologic exam is normal. She has no café-au-lait spots and no family history of scoliosis.
1. Which features in this presentation are atypical for adolescent idiopathic scoliosis, and what is your workup?
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Atypical features: right thoracic curve with a left-sided prominence pattern that is not the usual right thoracic/left lumbar pattern, a premenarchal patient with a curve over 35 degrees (high risk of progression), and night pain that wakes her - night pain is not typical of idiopathic scoliosis and raises concern for an underlying lesion (osteoid osteoma, infection, tumor, syrinx, tethered cord). Workup: full spine MRI to evaluate the neuraxis, particularly given the atypical curve pattern and night pain; consider a bone scan or CT if a focal lesion is suspected. Obtain full-length standing PA and lateral radiographs with assessment of Risser sign and triradiate cartilage status to estimate remaining growth. A careful neurologic exam and skin exam for stigmata are essential. Do not assume idiopathic scoliosis until MRI excludes a syrinx, tethered cord, or tumor.
2. Assuming MRI is normal, how do you counsel the family about progression risk and treatment options?
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Progression risk depends on remaining growth: she is premenarchal with a Risser sign likely 0-1 and open triradiate cartilage, so she has substantial growth remaining and a 38-degree curve has a high likelihood of progressing (curves over 30 degrees in skeletally immature patients progress frequently). Options: observation if the curve is stable, bracing for curves 25-40 degrees in growing patients (evidence supports bracing to reduce progression to surgery), and surgery for curves over 45-50 degrees or those progressing despite bracing. Counsel that bracing requires 16-18 hours per day to be effective and does not correct the curve, only slows progression. Discuss the psychosocial burden of bracing in an adolescent. Set follow-up every 4-6 months with serial radiographs until skeletal maturity.
3. She returns 8 months later with a curve of 52 degrees and a Risser sign of 2. What is your recommendation and how do you frame the surgical discussion?
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At 52 degrees with Risser 2 and ongoing growth, the curve has progressed despite conservative management and exceeds the surgical threshold. Recommend posterior spinal fusion with segmental instrumentation. Frame the discussion honestly: goals are to prevent progression, improve truncal balance and appearance, and preserve pulmonary function; the surgery is major, involves blood loss and a hospital stay, and carries risks of infection, neurologic injury (mitigated by neuromonitoring and a wake-up test), implant failure, and adjacent segment issues. Discuss that she will lose some spinal flexibility and should avoid high-impact contact sports long term. Address body image and school impact. Confirm the family understands that the curve will be improved but not fully corrected, and document shared decision-making.