Please assess the completion status of the following clinical trial:

Trial Title: Analgesia in Knee Arthroscopic Surgery

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE2
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Patients scheduled for knee arthroscopy under spinal anaesthesia~Exclusion Criteria:~* Diabetes Mellitus~* Contraindication to spinal anesthesia~* Patient refusal

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 50 Years
- Healthy Volunteers: f

Study Arms:
- Dexamethasone (Type: ACTIVE_COMPARATOR): patients will receive intra-articular 8 mg dexamethasone added to 18 mL 0.25% bupivacaine into the knee joint.
- Dexmedetomidine (Type: ACTIVE_COMPARATOR): patients will receive intra-articular 1ug/kg dexmedetomidine added to 18 mL 0.25% bupivacaine into the knee joint.
- Control (Type: PLACEBO_COMPARATOR): patients will receive intra-articular 18 mL 0.25% bupivacaine and 2mL isotonic saline into the knee joint.

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