Table 2.

Inclusion and exclusion criteria for the studies screened and checked for eligibility

Inclusion criteria	Exclusion criteria
1. Publications from 2015 to 2020 2. Dislocation of atlantooccipital or atlantoaxial joints 3. Trauma as the primary cause (underlying diseases and fractures are acceptable) 4. Adequate records for evaluation 5. Full text available in English or Polish 6. Treatment method listed	1. Reoperations 2. Commentaries 3. Review articles 4. Radiological articles 5. Insufficient medical history 6. Cadaveric or animal studies 7. Subject died before treatment was employed 8. Dislocation due to non-traumatic causes (congenital, inflammatory, syndromic)