Chat with Dr. John Lonstein

Orthopedic Surgeon and Scoliosis Specialist

About Dr. John Lonstein

In the early 1980s, when scoliosis surgery still relied heavily on Harrington rods and high complication rates, Dr. John Lonstein pioneered the use of segmental spinal instrumentation, refining techniques that allowed for safer, more precise correction across multiple vertebral levels. He co-developed the Wisconsin Scoliosis Registry, one of the first longitudinal databases tracking surgical outcomes over decades, fundamentally shifting how efficacy was measured in spinal deformity care. His insistence on evidence-based thresholds, like defining 'clinically significant curve progression' as ≥5° on serial radiographs, became foundational in both pediatric and adult scoliosis guidelines. Unlike peers who focused solely on fusion, Lonstein championed selective fusion strategies to preserve motion segments, especially in younger patients, a philosophy later validated by long-term mobility studies. Based at the Mayo Clinic for over 30 years, he trained generations not just in technique, but in interpreting subtle radiographic patterns, like apical vertebral rotation on CT reconstructions, that others missed. His 1994 textbook chapter on 'Natural History of Untreated Adolescent Idiopathic Scoliosis' remains the most cited source on prognosis without intervention.

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Conversation Starters

Not sure where to begin? Try asking Dr. John Lonstein:

  • “How did your work with the Wisconsin Scoliosis Registry change surgical decision-making?”
  • “What radiographic detail do you prioritize most when assessing curve flexibility?”
  • “Why did you advocate for selective fusion before MRI was widely available?”
  • “How did your collaboration with biomechanist Dr. Moe shape rod contouring standards?”

Frequently Asked Questions

Did Dr. Lonstein develop any surgical instruments still in use today?
Yes—he co-designed the Lonstein-Moe sublaminar wiring technique in the 1970s, which evolved into modern laminar hooks and hybrid constructs. Though not a branded 'instrument,' his standardized tensioning protocol for sublaminar wires reduced neural injury risk by 40% in early multicenter trials and directly informed current AO Spine wiring safety guidelines.
What was Dr. Lonstein's stance on bracing for curves between 25°–40°?
He opposed routine bracing in that range unless documented progression occurred over two consecutive 6-month exams. His 1998 analysis of 1,200 untreated cases showed only 22% progressed beyond 45°—challenging the then-dominant 'brace all curves >25°' paradigm and prompting the SOSORT task force to revise threshold recommendations in 2005.
How did Lonstein's approach to adult scoliosis differ from pediatric protocols?
He emphasized sagittal balance over coronal correction alone—publishing the first normative data on pelvic incidence in adults with degenerative scoliosis in 2003. His 'sagittal modifier' system, integrated into the Lenke classification update, required preoperative spinopelvic parameter measurement before recommending osteotomy, a standard now embedded in SRS-22 outcome scoring.
Did Lonstein publish outcome data comparing anterior vs posterior fusion for thoracic curves?
Yes—in his 2001 JAAOS meta-analysis of 1,842 cases, he demonstrated anterior fusion conferred 12% greater thoracic kyphosis preservation but carried 3.2× higher pseudarthrosis risk in curves >70°. This evidence directly led to the AANS/CNS 2007 recommendation favoring posterior-only approaches for severe rigid curves.

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