Please assess the completion status of the following clinical trial:

Trial Title: Vertebral Osteosynthesis in Degenerative Lumbar Stenosis With Spondylolisthesis

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Patients with degenerative spondylolisthesis L4-L5 confirmed by radiography with radicular pain for whom the antalgic and anti-inflammatory treatment are not efficient for at least 3 months;~* Patients who agree to take part in the study and to sign an Informed Consent Form~Exclusion Criteria:~* Contre-indications to surgery or to vertebral isolated fixation L4-L5~* Previous lumbar surgery~* Work accidents~* Psychiatric troubles that may interfere with the clinical evaluation~* Pregnant women or women who could be pregnant during the study~* Patient under special supervision or trusteeship~* Refusal to sign the Informed Consent Form~* No Public Health Insurance cover

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- 1 (Type: EXPERIMENTAL): osteosynthesis
- 2 (Type: ACTIVE_COMPARATOR): Simple surgery

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