This research was supported by grants from the National Nature Science Foundation of China (No. 30872599) and the Beijing Nature Science Foundation of China (No. 7092028).Acknowledgments: The authors thank the DNA donors for making this study possible.
Background Ossification of the posterior longitudinal ligament (OPLL) is characterized by the replacement of ligamentous tissue with new ectopic bone formation, and has a strong genetic background. Because of the ab...