Response to: Letter to the Editor, Is Anterior-Only Fixation Adequate for Three-Column Injuries of the Cervical Spine?

The AO classification system is much fine-tuned and is still under development. [...]it does not use the three-column concept that is used traditionally. (5) In one patient, we required the additional posterior instrumentation as mentioned in the manuscript (this could be due to the associated rotational component and poor patient compliance with the American Spinal Injury Association impairment scale D neurology). Conflicts of interest No potential conflict of interest relevant to this article was reported. 1.