Surgical treatment of the severely damaged atlantoaxial joint with C1–C2 facet spacers: Three case reports

AbstractRationale:Atlantoaxial subluxation (AAS), caused by congenital factors, inflammation such as rheumatoid arthritis, infection, neoplasia, or trauma, is rare and severely erodes and subluxates atlantoaxial (AA) joints. For these patients, surgical reduction, and stabilization are difficult. Su