Not Yet RecruitingNot Applicable

Comparison of 90° and 120° Arm Positions in Costoclavicular Block

106 participantsStarted 2026-05-15

Plain-language summary

The costoclavicular approach of the infraclavicular brachial plexus block is widely used for upper extremity surgeries due to its reliable anatomy and high success rates. Patient positioning, particularly the degree of arm abduction, may influence the spread of local anesthetic and the characteristics of the block. However, the optimal arm abduction angle during this procedure remains unclear. This prospective randomized controlled trial aims to investigate the effect of two different arm abduction angles (90° and 120°) on block onset time and block success in patients undergoing hand, wrist, and forearm surgery under ultrasound-guided costoclavicular brachial plexus block. Patients will be randomly assigned to one of two groups according to the degree of arm abduction. The primary outcome is block onset time. Secondary outcomes include block success, sensory and motor block characteristics, perfusion index changes, hemodynamic parameters, readiness for surgery at 15 and 20 minutes, block performance time, need for additional anesthesia, postoperative neurological evaluation at 4 and 24 hours, complications, and patient satisfaction. The findings of this study are expected to provide evidence on optimal patient positioning to improve the effectiveness and reliability of ultrasound-guided costoclavicular brachial plexus block.

Who can participate

Age range

18 Years – 80 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Patients aged between 18 and 80 years. * Patients scheduled for elective upper extremity surgery (hand, wrist, forearm). * Patients classified as ASA I-III. * Patients who provide informed consent after being informed about the study. Exclusion Criteria: * History of previous surgery, scar tissue, tumor, or trauma that may alter brachial plexus anatomy. * Presence of infection, hematoma, severe edema, burn, or open wound at the block application site. * Known allergy to local anesthetics or other medications used in the study. * Coagulopathy, use of anticoagulants, or platelet count \< 100,000/mm³. * History of peripheral neuropathy, neurological deficit, cervical radiculopathy, or CRPS. * Pregnancy or breastfeeding. * Patients with BMI \< 18 kg/m². * Patients with BMI \> 35 kg/m². * Severe cardiac, pulmonary, renal, or hepatic failure. * Mental retardation, communication difficulties, or lack of cooperation. * Deformity, amputation, or large mass in the surgical extremity that may interfere with sensorimotor assessment. * Preoperative significant sensory loss, motor weakness, or signs of neurological disease. * Severe anemia (Hb \< 9 g/dL) or polycythemia (Hb \> 18 g/dL). * Psychiatric disorders, substance abuse, or any condition that may interfere with study compliance.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Block Onset Time

Timeframe: Up to 30 minutes after block performance

Trial details

NCT IDNCT07586670

SponsorAnkara Etlik City Hospital

Sponsor typeOTHER_GOV

Study typeINTERVENTIONAL

Primary completion2026-07-15

Contact for this trial

Algan TURGUT ÇARSANCAKLI, M.D.

+90 532 486 52 69 alganturgut@gmail.com

View on ClinicalTrials.gov More Perfusion Index trials