A study comparing anesthesia methods to reduce pain after arthroscopic rotator cuff repair: single-shot vs 7-day continuous interscalene block

Evaluation of the analgesic effects of single-shot versus continuous interscalene block in rotator cuff tear surgery - ARCR-ISB Trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000060910

Enrollment

Registered

2026-03-12

Start date

2019-12-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Rotator cuff tear

Interventions

Continuous group (catheter) Preoperative ultrasound-guided interscalene brachial plexus block with perineural catheter placement. Initial bolus via catheter: ropivacaine 0.375% 10 mL plus dexametha

early removal is allowed for adverse events or patient request. Single-shot group (control) Preoperative ultrasound-guided single-shot interscalene brachial plexus block at the same timing as the

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1.Patients scheduled to undergo arthroscopic rotator cuff repair for rotator cuff tear 2.Eligible to receive a preoperative interscalene brachial plexus block (single-shot or continuous catheter technique) 3.Able to provide written informed consent 4.Age 20 years or older

Exclusion criteria

Exclusion criteria: 1.Allergy, hypersensitivity, or contraindication to ropivacaine or dexamethasone (or local anesthetics) 2.Not suitable for interscalene block (e.g., infection at puncture site, significant coagulation abnormality) 3.Unable to provide reliable pain assessment (NRS) or informed consent due to severe cognitive impairment or psychiatric disorder 4.Revision surgery or concomitant major procedures 5.Severe pulmonary disease where the risk of phrenic nerve palsy is unacceptable 6.Any other condition judged by the investigator to make the patient unsuitable for study participation

Design outcomes

Primary

Measure	Time frame
Postoperative pain intensity (NRS) longitudinal profile. Time points: POD1, POD2, POD3, POD4, POD5, POD7. NRS scores at each time point will be used to compare between-group differences in pain trajectory (group x time) between the single-shot and continuous interscalene block groups. Time frame: POD1-POD7.	—

Secondary

Measure	Time frame
1.Rescue analgesic use (total count). Time frame: POD0, POD1, and cumulative POD0-1 (0-48 hours). 2.Early postoperative pain trajectory (NRS) until postoperative day 1. 3.Time to pain exacerbation after the block. 4.Postoperative dietary intake (%). Time frame: POD1-POD3, recorded for breakfast, lunch, and dinner. 5.Shoulder range of motion (ROM). Time frame: preoperative, 3 months, 6 months, 12 months. Measures: forward flexion, external rotation, and internal rotation (spinal level). 6.Shoulder strength. Time frame: preoperative, 6 months, 12 months. Measures: abduction strength at 45deg and 90deg, external rotation strength, and internal rotation strength. 7.Constant-Murley Score. Time frame: preoperative, 12 months.	—

Measure

Time frame

1.Rescue analgesic use (total count). Time frame: POD0, POD1, and cumulative POD0-1 (0-48 hours). 2.Early postoperative pain trajectory (NRS) until postoperative day 1. 3.Time to pain exacerbation after the block. 4.Postoperative dietary intake (%). Time frame: POD1-POD3, recorded for breakfast, lunch, and dinner. 5.Shoulder range of motion (ROM). Time frame: preoperative, 3 months, 6 months, 12 months. Measures: forward flexion, external rotation, and internal rotation (spinal level). 6.Shoulder strength. Time frame: preoperative, 6 months, 12 months. Measures: abduction strength at 45deg and 90deg, external rotation strength, and internal rotation strength. 7.Constant-Murley Score. Time frame: preoperative, 12 months.

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Countries

Japan

Contacts

Public ContactRyuta Oishi

Yoshioka Hospital Department of Orthopaedic Surgery

buntcraftsman4@gmail.com08055725573

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026