Original Article
The ratio of the posterior atlanto-occipital interval (PAOI): a novel radiographic ratio method evaluating the risk of cervical spondylotic myelopathy—a case-control study
Mingsheng Tan, Jipeng Song, Yanlei Wang, Long Gong, Yan Sun, Ping Yi, Feng Yang, Xiangsheng Tang, Qingying Hao, Wenhao Li