Please assess the completion status of the following clinical trial:

Trial Title: MESA Rail™ AIS Study - Preservation of Curve Correction

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Diagnosis of AIS requiring surgical treatment for selective thoracic/lumbar fusion with a minimum of five (5) instrumented vertebrae between T1-S1 as confirmed by patient history and radiographic studies. AIS cases must be classified as a Lenke type 1 or type 2 curve. No cervical vertebrae are to be incorporated into the construct.~* Willingness and ability to comply with the requirements of the protocol including follow-up requirements.~* Willing and able to sign a study specific informed consent form or, in the case of a patient who is a minor, provide assent and the minor patient's parent/legal guardian provides written consent to participate.~* Age range of ≥ 11 years old and ≤ 21 years old at time of surgery.~Exclusion Criteria:~* Previous anterior or posterior spine surgery at the index levels.~* Previous posterior spine surgery (e.g., posterior element decompression) that destabilizes the cervical/thoracic/lumbar spine.~* Active systemic infection or infection at the operative site.~* Co-morbid medical conditions of the spine or upper/lower extremities that may affect the thoracic or lumbar spine neurological and/or pain assessment.~* Metabolic bone disease such as osteoporosis that contradicts spinal surgery.~* History of an osteoporotic fracture.~* History of an endocrine or metabolic disorder (e.g., Paget's disease) known to affect bone and mineral metabolism.~* Taking medications that may interfere with bony/soft tissue healing including chronic steroid use.~* Known allergy to titanium or cobalt chrome.~* Rheumatoid arthritis or other autoimmune disease or a systemic disorder such as HIV, active hepatitis B or C or fibromyalgia.~* Insulin-dependent type 1 or type 2 diabetes.~* Medical condition (e.g., unstable cardiac disease, cancer) that may result in patient death or have an effect on outcomes prior to study completion.~* Pregnant, or intend to become pregnant, during the course of the study.~* Severe obesity (Body Mass Index \> 40).

- Gender: ALL
- Minimum Age: 11 Years
- Maximum Age: 21 Years
- Healthy Volunteers: f

Study Arms:
- AIS (Type: None): Surgical implantation of the K2M MESA Rail™ Deformity System in the treatment of Adolescent Idiopathic Scoliosis (AIS).

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