Fracture of the atlas or C1 fracture are commonly the result of falls and other trauma, which cause hyperextension, or axial compression of the cervical spine1).
Smith RM, Bhandutia AK, Jauregui JJ, Shasti M, Ludwig SC. Atlas Fractures: Diagnosis, Current Treatment Recommendations, and Implications for Elderly Patients. Clin Spine Surg. 2018 Aug;31(7):278-284. doi: 10.1097/BSD.0000000000000631. PMID: 29620588.