One injection vs. two: a new approach to shoulder surgery pain?
NCT ID NCT07762417
First seen Aug 13, 2026 · Last updated Aug 14, 2026 · Updated 1 time
Summary
This trial tests whether a single nerve block (SPENG) can match the pain relief of a combined two-nerve block approach after shoulder arthroscopy. Adults aged 18-70 undergoing elective shoulder surgery will be randomly assigned to receive either the SPENG block or the combined suprascapular and axillary nerve blocks. The main goal is to compare the highest pain scores in the first 24 hours after surgery, while also looking at factors like how long the block takes, opioid use, and recovery quality.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Shoulder Posterior Pericapsular Nerve Group (SPENG) block, a single-injection ultrasound-guided nerve block procedure
- What this could lead to
- If the SPENG block works as well as the combined nerve blocks, it could offer a simpler, faster, and potentially safer way to manage pain after shoulder surgery.
- What could go wrong
- This is a small, single-center trial, and the SPENG block may not provide adequate pain relief compared to the established technique. There are also risks of nerve block complications, though rare.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 60 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Nov 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2027
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age 18 to 70 years * American Society of Anesthesiologists (ASA) physical status I-III * Scheduled to undergo elective shoulder arthroscopy under general anesthesia * Able to understand the Numeric Rating Scale for pain assessment * Able and willing to provide written informed consent Exclusion Criteria: * Known allergy or hypersensitivity to local anesthetics used in the study * Infection at the planned block injection site * Coagulopathy or ongoing anticoagulant therapy that cannot be appropriately interrupted for peripheral nerve block * Pre-existing neurological deficit affecting the operative upper extremity * Moderate or severe pulmonary disease * Known diaphragmatic dysfunction * Chronic opioid use * Chronic pain syndrome * Body mass index greater than 35 kg/m² * Pregnancy or breastfeeding * Inability to understand or reliably report Numeric Rating Scale pain scores * Inadequate sonographic window preventing safe performance of the allocated block technique before randomization
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
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