Please assess the completion status of the following clinical trial:

Trial Title: Prospective Study on Ennovate® Pedicle Screw Fixation in Isthmic Spondylolisthesis Patients

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:~* Symptomatic single-level IS (L4-S1), (VAS \> 30mm, treated conservatively for a minimum of 6 months)~* Isthmic Spondylolisthesis Meyerding grade I and II~* Signed Informed Consent of the patient regarding the participation in this study~Exclusion Criteria:~* Multilevel IS~* Severe degenerative changes of cranial adjacent level (disc height of \<50% of the next healthy segment,~* Previous lumbar spine surgery except microdiscectomy or micro- decompression of the index level~* Patients psychically or mentally not able to give or refuse consent~* Patients psychically or mentally not able to answer the questions regarding their health status and quality of life~* Pregnancy (current or planned)~* BMI \>35~* Systemic or local infection~* Chemotherapy or radiation ongoing~* Desire of early retirement (running pension request)~* All contraindications as listed in the instructions for use

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- Ennovate (Type: None): Implantation of an Ennovate® internal fixation

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