Injection Site in Ultrasound-Guided Interscalene Block for Shoulder Arthroscopy

Sponsor
Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
Study ID
NCT07695025
Status
Not Yet Recruiting

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Conditions

  • Postoperative Pain
  • Shoulder Arthroscopy

Eligibility Criteria

Sex
ALL
Age
18 Years - N/A
Healthy Volunteers
Not accepted

Interventions

  • Ultrasound-Guided Interscalene Block — PROCEDURE
    Ultrasound-guided interscalene brachial plexus block performed before induction of general anesthesia. Participants are assigned to one of two injection sites around the C5-C7 nerve roots according to the randomized study protocol.

Study Details

Ultrasound-guided interscalene block is commonly used for postoperative analgesia in patients undergoing shoulder arthroscopy. The location of local anesthetic injection may influence both block efficacy and the incidence of block-related complications. This randomized, double-blind clinical trial compares two different injection sites around the C5-C7 nerve roots using the same local anesthetic dose and volume. The study will assess block success, postoperative analgesia, opioid consumption, diaphragmatic function, and procedure-related complications.

Key Dates

First listed
Jul 10, 2026
Start date
Jul 15, 2026
Status verified
Jul 2026
Primary completion
Nov 10, 2026
Completion
Nov 30, 2026

Study Design

Enrollment
50 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Experimental: Anterior Interscalene Block
    Ultrasound-guided interscalene block with local anesthetic injected between the C5-C7 nerve roots and the anterior scalene muscle.
  • Experimental: Posterior Interscalene Block
    Ultrasound-guided interscalene block with local anesthetic injected between the C5-C7 nerve roots and the middle scalene muscle.

Primary Outcome Measure

Postoperative Analgesic Efficacy [ Time Frame: 12 hours after surgery ]

Central Contacts

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