A prospective, multi-center, post approval study with concurrent control group consisting of those patients that were enrolled and did not fail in the PCM Cervical Disc IDE clinical study and will to give consent to participate.
All of the PCM IDE investigational sites who have active patients will be chosen to participate in this study. All patients who are actively participating in the pivotal IDE study will be asked to participate in this study.
The study consists of follow-up periods only. The follow-up period will last for seven years from each patient's surgery date.
