Record response from expert clinicians to participate in AO Spine classification study

AO Spine recently held an open call for members to participate in a new classification study, the AO Spine Comprehensive Classification of Adult Spinal Deformity study (AOASD Classification).

26 February 2019

AOASD Naresh-Babu

In just 48 hours, the open call to AO Spine members prompted 175 responses from expert adult spinal deformity surgeons from around the world, showing how much interest there is in the topic and in research. 

The study is run together by the AO Spine Knowledge Forum Deformity and AO Spine Asia Pacific. Principal Investigator (PI) J Naresh-Babu, and Co-PIs Manabu Ito, Jong-Beom Park, and Kenny Kwan aim to develop a comprehensive adult spinal deformity classification that separates patients into clinically different subgroups that require different treatment strategies.

AO Spine members were invited to participate in a modified Delphi survey, where their opinions would be gathered to establish consensus. 54 clinicians were selected based on their expertise, clinical experience, and research experience. AO Spine regional research officers from the five regions also provided their recommendations in the selection process.

The first round of the Delphi survey has been sent to all selected panelists. A sample of panelists will assemble for an in-person meeting at the Global Spine Congress 2019 in Toronto, Canada and a summary will be reported during a podium presentation on May 17. 

See a short introduction video of the study by PI J Naresh Babu:

More information

More information on AO Spine Knowledge Forum Deformity and the ongoing studies at

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