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Interscalene Versus Infraspinatus-Teres Minor Blocks for Arthroscopic Shoulder Surgery

NCT07253740 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 60

Last updated 2026-05-14

No results posted yet for this study

Summary

This randomized controlled trial aims to compare the effectiveness of interscalene (ISB) and infraspinatus-teres minor (ITM) blocks for postoperative analgesia in patients undergoing elective arthroscopic shoulder surgery. The primary outcome is total 24-hour opioid consumption. Secondary outcomes include pain scores, hemidiaphragmatic paresis incidence and severity, duration of analgesia, and changes in lung function. Participants are randomized into ISB or ITM groups; blocks are performed under ultrasound guidance. Postoperative pain is managed with patient controlled analgesia(PCA).

Conditions

  • Arthroscopic Shoulder Surgery

Interventions

PROCEDURE

Interscalene Brachial Plexus Block (ISB)

Patients receive ultrasound-guided ISB before arthroscopic shoulder surgery. After sedation with IV midazolam, 15 ml of 0.25% bupivacaine is injected using a 22 Gauge 50 mm needle with posterior in-plane approach, targeting C5-C6 roots.

PROCEDURE

Infraspinatus-Teres Minor Block (ITM)

Patients receive ultrasound-guided ITM interfascial block in sitting position before surgery. Using a 22 Gauge 10 mm needle, 25 ml of 0.25% bupivacaine is injected between infraspinatus and teres minor muscles via out-of-plane or in-plane hydrodissection.

Sponsors & Collaborators

  • Ataturk University

    lead OTHER

Principal Investigators

  • Ali Ahıskalıoğlu, Professor · Ataturk University Department of Anesthesiology and Reanimation

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-01-01
Primary Completion
2026-05-01
Completion
2026-05-02

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07253740 on ClinicalTrials.gov