RT Book, Section A1 Trescot, Andrea A2 Diwan, Sudhir A2 Staats, Peter S. SR Print(0) ID 1107196521 T1 Atlanto-Occipital Joint Injections T2 Atlas of Pain Medicine Procedures YR 2015 FD 2015 PB McGraw-Hill Education PP New York, NY SN 9780071738767 LK accessanesthesiology.mhmedical.com/content.aspx?aid=1107196521 RD 2024/10/09 AB The atlanto-occipital (AO) and atlanto-axial (AA) joints are unique joints in the spine, connecting the cervical region to the base of the skull. The AA and AO joints are an often under-appreciated cause of pain, and should be part of the differential diagnosis of cervical spine pain and occipital headaches.