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NCT07739303

Overview

NCT ID: NCT07739303
Lead Sponsor: Ankara Etlik City HospitalOTHER_GOV
Official Title: Comparison of Anterior Suprascapular and Axillary Nerve Block Versus Interscalene Block for Postoperative Analgesia and Diaphragmatic Function in Shoulder Surgery: A Randomized Controlled Trial
Brief Summary: Shoulder surgeries are among the most frequently performed orthopedic interventions and are often associated with moderate to severe postoperative pain. In these procedures, effective pain management is crucial for early rehabilitation and patient comfort.

Peripheral nerve blockade is widely used for postoperative analgesia in shoulder surgery. While the interscalene brachial plexus block is considered the gold standard for pain control, it is frequently associated with unintended phrenic nerve blockade, leading to hemidiaphragmatic paresis. To minimize respiratory complications while maintaining effective analgesia, alternative diaphragm-sparing regional anesthesia techniques, such as the combination of suprascapular and axillary nerve blocks, have been introduced.

The aim of this study is to compare the analgesic efficacy and respiratory functions preservation of the ultrasound-guided anterior approach suprascapular combined with axillary nerve block versus interscalene block in patients undergoing shoulder surgery

Status and Timeline

Status: Not yet recruiting
Last Update Posted: Jul 31, 2026Actual
Start Date: Aug 14, 2026Estimated
Primary Completion Date: Dec 14, 2026Estimated
Completion Date

Participation Criteria

Ages Eligible for Study: Adult (18-64)Older Adult (65+)
Sexes Eligible for Study: All
Accepts Healthy Volunteers?: No
Eligibility Criteria: Inclusion Criteria:

Patients aged between 18 and 65 years

American Society of Anesthesiologists (ASA) physical status I, II, or III

Patients scheduled to undergo elective arthroscopic shoulder surgery

BMI between 18 and 30 kg/m2

Ability to provide written informed consent

Exclusion Criteria:

Known allergy or hypersensitivity to local anesthetics

Presence of localized infection at the planned injection site

Severe coagulopathy or active use of anticoagulant medications

Contralateral phrenic nerve palsy or a diagnosis of severe chronic obstructive pulmonary disease (COPD)

History of chronic opioid consumption or neuropathic pain

Study Plan

Study Type: Interventional
Phase: Not Applicable
Enrollment: 70Estimated
Primary Purpose: Treatment
Allocation: Randomized
Interventional Model: Parallel Assignment
Masking: Double

Contacts and Locations

Central Contacts: İbrahim TopcuContact
ibrahimtpc78@gmail.com+905437860316

Similar Studies

Participant Group/Arms

Interscalene BlockActive Comparator

After the patients are placed under monitoring and positioned supine, and appropriate field sterilization is achieved, the ultrasound probe will be positioned transversely at the level of the cricoid cartilage (C6) with the head turned to the contralateral side. Advancing the needle laterally into the interscalene groove between the anterior and middle scalene muscles, 10 mL of local anesthetic (%0.5 bupivacaine ) will be injected between the C5 and C6 nerve roots.

Procedure: Interscalene Block

Combination of Axillary and Anterior Suprascapular BlocksActive Comparator

After the patients are placed under monitoring and positioned supine, and appropriate field sterilization is achieved, the ultrasound probe will be positioned transversely in the supraclavicular fossa with the head turned to the contralateral side. Advancing the needle in-plane, 5 mL of local anesthetic (%0.5 bupivacaine) will be injected around the suprascapular nerve as it branches anteriorly from the superior trunk of the brachial plexus. Subsequently, for the axillary nerve block, the patient will be positioned laterally and the ultrasound probe will be placed longitudinally over the posterior aspect of the shoulder. Advancing the needle into the quadrangular space, 5 mL of local anesthetic (%0.5 bupivacaine) will be injected around the axillary nerve adjacent to the posterior circumflex humeral artery.