Please assess the completion status of the following clinical trial:

Trial Title: Interscalene Brachial Plexus Block Combined With Suprascapular Nerve Block

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

Eligibility Criteria:
Inclusion Criteria:~1. definite rotator cuff tear on preoperative MRI, which needed repair;~2. acceptance of arthroscopic surgery including rotator cuff repair;~3. \> 20 years old; and~4. acceptance of routine regional blocks and patient-controlled analgesia.~Exclusion Criteria:~1. did not want arthroscopic rotator cuff repair;~2. stopped PCA before 48 h postoperatively due to side effects;~3. history of shoulder operation or fracture;~4. concomitant neurological disorder around the shoulder;~5. conversion to open surgery from the arthroscopy; and~6. contraindication to the routine regional blocks in this study

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- ISB with SSNB (Type: EXPERIMENTAL): During arthroscopic rotator cuff repair, ultrasound-guided ISB was performed preemptively with 7.5 mL ropivacaine immediately after general anesthesia was induced. And at the end of surgery, arthroscopy-guided SSNB was performed with 10 mL ropivacaine.
- ISB alone (Type: PLACEBO_COMPARATOR): During arthroscopic rotator cuff repair, ultrasound-guided ISB was performed preemptively with 7.5 mL ropivacaine immediately after general anesthesia was induced. And at the end of surgery, arthroscopy-guided SSNB was performed with 10 mL normal saline.

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