Interscalene Versus Infraspinatus-Teres Minor Blocks for Arthroscopic Shoulder Surgery

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).

NCT Number	NCT07253740
Lead Sponsor	Ataturk University
Conditions	Arthroscopic Shoulder Surgery
Enrollment	60 participants
Start Date	2026-01-01
Primary Completion	2026-05-01 (estimated)
Study Completion	2026-05-02 (estimated)
Updated on ClinicalTrials.gov	2026-05-14