Researchers develop new classification system for adult idiopathic scoliosis


Researchers from The Mount Sinai Hospital (New York, USA) have designed a new X-ray classification system for adult idiopathic scoliosis that can more precisely define which parts of the spine need correction, which could enhance treatment, communication, and analysis of spinal deformities affecting older patients. The classification system was outlined in a study published in Spine Deformity in August.

Led by James Lin, a spine surgeon at The Mount Sinai Hospital and Assistant Professor of Orthopedic Surgery at the Icahn School of Medicine at Mount Sinai (New Yorkm USA), the study team said their modern approach to the X-ray classification system could provide a more universal and standard assessment of adult scoliosis.

“This classification system provides a new language for clinicians and researchers, helping us reliably categorise and communicate the radiographic features of adult idiopathic scoliosis, in order to more effectively facilitate treatment and further analysis,” said Lin. “This will help researchers and surgeons scrutinize past results from prior surgeries and refine future treatment.”

The new method builds on the Lenke classification system for adolescent idiopathic scoliosis, which is used to define six curve types but is not applicable to adults. The new three-component method maintains the curve types from the Lenke classification and introduces assessments of the global alignment and lumbosacral curve, two features that more commonly deteriorate in older patients.

In the study, 12 spine surgeons used the new classification system to grade 30 cases twice, which resulted in near-perfect agreement in the assessment of the patients. This latest method to classify adult scoliosis could improve treatment options because it helps define the different areas of the spine that need to be corrected and fused, and there is currently no widely accepted X-ray classification system for the complex condition.

“The development of a new classification system, led by Dr Lin, strengthens our efforts at the Spine Center at The Mount Sinai Hospital to provide innovative and customized treatment for patients with spinal disorders and injuries,” said Andrew Hecht, chief of spine surgery for the Mount Sinai Health System and The Mount Sinai Hospital, and director of the Spine Center at Mount Sinai. “The new method ensures that we have a more exhaustive, thorough, and rigorous benchmark in how we analyse and treat adults with spinal conditions throughout the Mount Sinai Health System, but also for our colleagues throughout the entire orthopaedic community, helping us all to provide exceptional care.”


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