Please assess the completion status of the following clinical trial:

Trial Title: Post-Market Study Evaluating the Safety and Effectiveness of NuNec® Cervical Arthroplasty System

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* is at least 21 years of age and skeletally mature~* must have symptomatic degenerative disc disease at one level in the cervical spine, C3 to C7, demonstrated by herniated disc and/or spondylosis;~* must have completed a minimum of six weeks of unsuccessful conservative, non-operative care or has the presence of progressive symptoms or signs of nerve root/spinal cord compression in the face of conservative treatment~* must score at least 15/50 (30%) on the Neck Disability Index~* is willing and able to follow the post-operative management program~* must understand and sign the informed consent document~Exclusion Criteria:~* symptomatic cervical DDD at more than one level~* axial neck pain as the primary diagnosis without evidence of neural compression~* neck or arm pain of unknown etiology~* any significant anatomical consideration which would make the anterior cervical approach excessively risky or impossible~* severe spondylosis at the target level~* prior surgery at the target level~* fused level adjacent to the target level~* osteoporosis, osteopenia, osteomalacia, Paget's disease or metabolic bone disease~* active infection or surgical site infection~* is using any medication known to interfere with bone/soft tissue healing~* diabetes mellitus requiring daily insulin management~* any terminal, systemic, or autoimmune disease~* medical conditions or mental incompetence which may interfere with study requirements~* BMI \>40 or a weight more than 100 lbs over ideal body weight~* chemical dependency problem that may interfere with study requirements~* current smokers~* history of any invasive malignancy unless treated and in remission for at least two years~* documented allergies to metal or plastic~* currently pregnant, or interested in becoming pregnant during the study follow-up

- Gender: ALL
- Minimum Age: 21 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- NuNec Cervical Disc (Type: EXPERIMENTAL): Each patient will be implanted with the NuNec Cervical Disc in a single level from C3 to C7. Postoperatively, patient evaluated at discharge, 6 weeks, 3, 6, 12 and 24 months.

Based on this trial design, predict the completion outcome and termination type (if applicable).