AO upper cervical classification system
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Images reproduced with permission. Copyright by AOSpine International, Switzerland.
Original 'pocket card' pdf and additional resource material available at aospine.aofoundation.org
AOSpine is a clinical division of the AO Foundation—an independent medically guided nonprofit organization.
The AOSpine Knowledge Forums are pathology focused working groups acting on behalf of AOSpine in their domain of scientific expertise.
Each forum consists of a steering committee of up to 10 international spine experts who meet on a regular basis to discuss research, assess the best evidence for current practices, and formulate clinical trials to advance spine care worldwide.
Study support is provided directly through AOSpine's Research department and AO's Clinical Investigation and Documentation unit.