Please assess the completion status of the following clinical trial:

Trial Title: Virtual Reality Hypnosis in Total Knee Arthroplasty Under Spinal Anesthesia

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: SUPPORTIVE_CARE
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Patients \>18 yo and scheduled for elective knee arthroplasty under spinal anesthesia~Exclusion Criteria:~1. Low auditory and/or visual acuity that precludes the use of the device.~2. ASA status \> 3~3. Head or face wounds precluding use of the device.~4. Schizophrenia or dissociative disorder.~5. Pregnancy.~6. Chronic renal insufficiency or severe hepatic insufficiency.~7. Non-proficiency in French (Research language).~8. Phobia of deep water.~9. Chronic pain and/or chronic analgesics consumption.~10. Medication affecting the autonomic nervous system.~11. Revision surgery.~12. Dizziness.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 99 Years
- Healthy Volunteers: f

Study Arms:
- Control Group (Type: ACTIVE_COMPARATOR): During the procedure, the patient in the control group receives pharmacological sedation, which is the standard of care currently practiced. Such sedation allows intraoperative anxiolysis, which is constantly required by patients in order to dissociate from their surroundings. Recall that total knee replacement surgery is extremely noisy, and the surrounding environment is itself an anxiety-provoking factor for the patient. Light to moderate, intraoperative sedation is carried out by intermittent boluses of midazolam 1 mg IV. Boluses are given every 5 minutes until a sedation level of -2 or -3 on the RASS (Richmond Agitation-Sedation Scale) scale is reached.~Patients randomized to the control group will undergo perioperative anesthesia according to the current standards of care, without the addition of the VR headset or headphones.
- VRH Group (Type: EXPERIMENTAL): They will experience an underwater experience while listening to hypnotic script designed to induce a change in state of consciousness, increasing parasympathetic system tone and relaxation response, and reducing the perception of painful stimuli.~During the whole procedure, an anesthesiologist will perform the usual cares, including closely monitoring, and will administrate intravenous sedation (midazolam) when necessary (see sedation protocol in the previous section).

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