Please assess the completion status of the following clinical trial:

Trial Title: Efficacy of corticoïd Infiltration Via Sacro-coccygien Hiatus in Discal Sciatica

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE3
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Adult with age equal or above to 18.~* Subject affiliated to French health insurance (Sécurité Sociale)~* Sciatic pain evolving since more than 1 month and less than 3 months~* Leg irradiation (pain above the knee)- True Lasègue- Mean leg pain during the latest 24 hours above 40 on an analogic visual scale (from 0 to 100)~* Pain induced by palpation in regards to the neo-articulation~* Pain not relieved by medical treatment with non steroids anti- inflammatory drugs or antalgics No sign of seriousness : no motor deficiency (muscular testing above or equal to 4 on an international scale (from 0 to 5), no sphincter deficiency, mean leg pain during the latest 24 hours below 80 on an analogic visual scale (from 0 to 100).~* Scanner of MRI since less than 3 months confirming discal hernia L4L5 or L5S1 in accordance with the clinic.~* Informed consent form signed~Exclusion Criteria:~* Age below 18~* Clinical arguments in favour of a non discal origin- Pregnant women~* Diabetic patient- Past history of diverticulosis complicated with severe arterial hypertension- Patient unable to understand the protocol~* No autonomy for coming to the hospital (no budget allocated for patient transportation)~* Hypersensitivity to local anesthetics with liaison amide-Hypersensitivity to one of the components-Porphyria~* Local or generalized infection, suspicion of infection~* Severe troubles of coagulation, anti-coagulant treatment taken- Imaging non concording~* Past history of infiltration via the sacro-coccygien hiatus~* Past history of lombar rachis surgery- Body mass index above 40.~* Intake of b-bloquants- Intake of antiarrythmics possibly giving torsades de pointe (amiodarone, disopyramide, quinidiniques, sotalol,...)-Cimétidine used at doses above or equal to 800mg/day.

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

Study Arms:
- corticoïd (Type: EXPERIMENTAL): anesthetic bloc (10 ml of xylocaïne 1%) immediately followed with corticoid (125mg in.5 ml)
- physiological solution (Type: PLACEBO_COMPARATOR): anesthetic bloc (10 ml of xylocaïne 1%) immediately followed with physiological solution (20 ml)
- feigning of peridural infiltration (Type: SHAM_COMPARATOR): feigning of peridural infiltration : anesthetic bloc (10 ml of xylocaïne 1%) immediately followed with placement of empty syringe in peridural.
- no intervention (Type: NO_INTERVENTION): natural evolution of discal sciatica

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