C1:C2 ratio is a potential tool assessing atlas fracture displacement and transverse ligament injury

Conclusions: A C1:C2 ratio >1.10 on plain radiographs showed a sensitivity of 80% in detecting atlas fractures with associated TL injury. All patients with a ratio of ≥1.15 had TL rupture subsequently confirmed by an advanced modality. A ratio calculation on radiographs is a potentially useful method of describing atlas lateral mass displacement. Level of evidence: Level III
Source: Journal of Craniovertebral Junction and Spine - Category: Orthopaedics Authors: Source Type: research