Shoulder PainNCT05442814
Anterior and Posterior Approaches of Suprascapular Nerve Block
A study testing Posterior suprascapular block and Anterior suprascapular block in people with Shoulder Pain and Postoperative Pain, run by Istanbul Medeniyet University at 1 site in Turkey (Türkiye).
Trial summary
Suprascapular nerve is a mixed motor and sensory peripheral nerve arising from the superior trunk of brachial plexus.The suprascapular nerve runs through the posterior triangle of the neck, anterior of the trapezius muscle and dorsal of the omohyoid muscle, in direction of the scapula. Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Shoulder Pain, Postoperative Pain, Diaphragmatic Paralysis
- What is being tested?
- Posterior suprascapular block and Anterior suprascapular block
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 11 Jul 2022to 15 Jul 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patient who accepts to study protocol
- Scheduled for shoulder surgery
- Between the ages of 18 and 80
Who cannot join
- Patients with coagulopathy
- Patients with a history of local anesthetic drug allergy and toxicity
- Patients with advanced organ failure
- Patients with mental retardation
- Patients with infection present at the injection site
- Patients with diaphragm paralysis
- Pregnant patients
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Comparison of Anterior and Posterior Approaches of Suprascapular Nerve Block in Arthroscopic Shoulder Surgery
Suprascapular nerve is a mixed motor and sensory peripheral nerve arising from the superior trunk of brachial plexus.The suprascapular nerve runs through the posterior triangle of the neck, anterior of the trapezius muscle and dorsal of the omohyoid muscle, in direction of the scapula. Suprascapular nerve block is performed by anterior and posterior approach. Posterior approach of the suprascapular nerve block has been shown for many years to provide effective analgesia in the shoulder region for the chronic and acute pain. There are studies showing that suprascapular block with anterior approach provides effective analgesia in shoulder arthroscopy.
The aim of our study was to compare anterior and posterior approaches of suprascapular nerve block in terms of analgesic efficacy and patient safety.
Read the detailed description
This study is a prospective randomized clinical trial will be conducted between July 2022 and June 2023.Participant will divide into two groups as participant who underwent suprascapular nerve block with the anterior approach and participant who underwent suprascapular nerve block with the posterior approach. Bupivacaine 5 ml %0.5 will be injected both group. Diaphragmatic thickness fraction will be evaluated with ultrasound left and right 7.-8. subcostal anterior axillary border with the participant with the semi-sitting position. Diaphragmatic thickness fraction will measure before the block and after 30 minutes the surgery. Participants will administered intravenous morphine patient controlled analgesia for 24 hours stay. The amount of opioid analgesics given in both groups will be determined (in mg). Postoperative 4th, 6th, 12th, 24th hour Visual Analogue Scale scores of the participants and opioid consumptions until that hours will be evaluated. An addition participant will be determined according to the surgery.
- Conditions
- Shoulder Pain, Postoperative Pain, Diaphragmatic Paralysis, Subomohyoid Suprascapular Nerve Block, Anterior Suprascapular Nerve Block, Suprascapular Nerve Block
- Being tested
- Posterior suprascapular block, Anterior suprascapular block
- Keywords
- Shoulder pain, Nerve Block, Diaphragmatic paralysis, Postoperative pain, Suprascapular block, Subomohyoid suprascapular block, Posterior Suprascapular block, Anterior Suprascapular block
- Medical subject headings
- Shoulder Pain, Pain, Postoperative, Respiratory Paralysis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Posterior suprascapular blockProcedure or surgery
Diaphragmatic thickness fraction will be evaluated in the participant underwent suprascapular block performed by posterior approach
Anterior suprascapular blockProcedure or surgery
Diaphragmatic thickness fraction will be evaluated in the participant underwent suprascapular block performed by anterior approach
| Study group | Role | What they receive |
|---|---|---|
| Posterior suprascapular block | Active comparator | Suprascapular block performed by posterior approach Receives: Procedure: Posterior suprascapular block |
| Anterior suprascapular block | Active comparator | Suprascapular block performed by anterior approach Receives: Procedure: Anterior suprascapular block |
What is being measured
The primary outcome is the main question the study is designed to answer.
Postoperative pain at the postoperatively 30 Minutes, 4 Hours, 6Hours, 12Hours, 24Hours
Visual analogue scale (0-10): 0= no pain, 10= the worst pain ever feel.
Measured: Up to 24 hours post-operative
Secondary outcomes (11)
Diaphragmatic movements
Ratio of diaphragm thickness in end-inspiration and end-expiration measured by ultrasonography
Measured: Baseline (Before the block performed) and 30 minutes after the end of surgery
Peroperatively opioid analgesic consumption (Remifentanil)
milligram
Measured: up to postoperative 0 minutes
Postoperative opioid analgesic consumption (morphine)
milligram
Measured: postoperative 30 minutes
Postoperative opioid analgesic consumption (morphine)
milligram
Measured: postoperative 4 hours
Postoperative opioid analgesic consumption (morphine)
milligram
Measured: postoperative 6 hours
Postoperative opioid analgesic consumption (morphine)
milligram
Measured: postoperative 12 hours
Postoperative opioid analgesic consumption (morphine)
milligram
Measured: postoperative 24 hours
Postoperative pain at postoperative 4 Hours
Visual analogue scale (0-10): 0= no pain, 10= the worst pain ever feel.
Measured: at postoperative 4 Hours
Postoperative pain at postoperative 6 Hours
Visual analogue scale (0-10): 0= no pain, 10= the worst pain ever feel.
Measured: at postoperative 6 Hours
Postoperative pain at postoperative 12 Hours
Visual analogue scale (0-10): 0= no pain, 10= the worst pain ever feel.
Measured: at postoperative 12 Hours
Postoperative pain at postoperative 24 Hours
Visual analog scale (0-10): 0= no pain, 10= the worst pain ever feel.
Measured: at postoperative 24 Hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Jul 2022
- Study start11 Jul 2022
- Primary completion15 Jun 2023
- Study completion15 Jul 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Shoulder PainStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- participant with anterior suprascapular block ,group 1 participant with posterior suprascapular block, group 2
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Lead sponsor
- Istanbul Medeniyet University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ebru Girgin Dinç, MD, Istanbul Medeniyet University
- Investigators
- Ebru Girgin Dinç, MD, Principal investigator, İstanbul Medeniyet University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05442814
- Sponsor's protocol ID
- EDinc
- Status last verified
- Feb 2026
- First submitted
- 18 Apr 2022
- Last updated
- 23 Feb 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: After the article is accepted by the journal
Study at a glance
From the registry record, last updated by the sponsor on 23 Feb 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of Anterior and Posterior Approaches of Suprascapular Nerve Block in Arthroscopic Shoulder Surgery
- ClinicalTrials.gov ID
- NCT05442814
- Acronym / sponsor ID
- EDinc
- Conditions
- Shoulder Pain, Postoperative Pain, Diaphragmatic Paralysis, Subomohyoid Suprascapular Nerve Block, Anterior Suprascapular Nerve Block, Suprascapular Nerve Block
- Keywords
- Shoulder pain, Nerve Block, Diaphragmatic paralysis, Postoperative pain, Suprascapular block, Subomohyoid suprascapular block, Posterior Suprascapular block, Anterior Suprascapular block
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Istanbul Medeniyet UniversityUniversity, hospital or other
- Study start
- 11 Jul 2022 (actual)
- Primary completion
- 15 Jun 2023 (actual)
- Study completion
- 15 Jul 2023 (actual)
- First posted
- 5 Jul 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Suprascapular nerve is a mixed motor and sensory peripheral nerve arising from the superior trunk of brachial plexus.The suprascapular nerve runs through the posterior triangle of the neck, anterior of the trapezius muscle and dorsal of the omohyoid muscle, in direction of the scapula. Suprascapular nerve block is performed by anterior and posterior approach. Posterior approach of the suprascapular nerve block has been shown for many years to provide effective analgesia in the shoulder region for the chronic and acute pain. There are studies showing that suprascapular block with anterior approach provides effective analgesia in shoulder arthroscopy.
The aim of our study was to compare anterior and posterior approaches of suprascapular nerve block in terms of analgesic efficacy and patient safety.
Detailed description
This study is a prospective randomized clinical trial will be conducted between July 2022 and June 2023.Participant will divide into two groups as participant who underwent suprascapular nerve block with the anterior approach and participant who underwent suprascapular nerve block with the posterior approach. Bupivacaine 5 ml %0.5 will be injected both group. Diaphragmatic thickness fraction will be evaluated with ultrasound left and right 7.-8. subcostal anterior axillary border with the participant with the semi-sitting position. Diaphragmatic thickness fraction will measure before the block and after 30 minutes the surgery. Participants will administered intravenous morphine patient controlled analgesia for 24 hours stay. The amount of opioid analgesics given in both groups will be determined (in mg). Postoperative 4th, 6th, 12th, 24th hour Visual Analogue Scale scores of the participants and opioid consumptions until that hours will be evaluated. An addition participant will be determined according to the surgery.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
- Model description
- participant with anterior suprascapular block ,group 1 participant with posterior suprascapular block, group 2
| Arm | Type | Receives |
|---|---|---|
| Posterior suprascapular block | Active comparator | Procedure: Posterior suprascapular blockSuprascapular block performed by posterior approach |
| Anterior suprascapular block | Active comparator | Procedure: Anterior suprascapular blockSuprascapular block performed by anterior approach |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Patient who accepts to study protocol
- Scheduled for shoulder surgery
- Between the ages of 18 and 80
Key exclusion criteria (7 listed)
- Patients with coagulopathy
- Patients with a history of local anesthetic drug allergy and toxicity
- Patients with advanced organ failure
- Patients with mental retardation
- Patients with infection present at the injection site
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Posterior suprascapular blockDiaphragmatic thickness fraction will be evaluated in the participant underwent suprascapular block performed by posterior approach | Procedure or surgery | Posterior suprascapular block |
| Anterior suprascapular blockDiaphragmatic thickness fraction will be evaluated in the participant underwent suprascapular block performed by anterior approach | Procedure or surgery | Anterior suprascapular block |
Primary outcome
Postoperative pain at the postoperatively 30 Minutes, 4 Hours, 6Hours, 12Hours, 24Hours
Time frame: Up to 24 hours post-operative
Visual analogue scale (0-10): 0= no pain, 10= the worst pain ever feel.
11 secondary outcomes
Diaphragmatic movements
Time frame: Baseline (Before the block performed) and 30 minutes after the end of surgery
Peroperatively opioid analgesic consumption (Remifentanil)
Time frame: up to postoperative 0 minutes
Postoperative opioid analgesic consumption (morphine)
Time frame: postoperative 30 minutes
Postoperative opioid analgesic consumption (morphine)
Time frame: postoperative 4 hours
Postoperative opioid analgesic consumption (morphine)
Time frame: postoperative 6 hours
Postoperative opioid analgesic consumption (morphine)
Time frame: postoperative 12 hours
Postoperative opioid analgesic consumption (morphine)
Time frame: postoperative 24 hours
Postoperative pain at postoperative 4 Hours
Time frame: at postoperative 4 Hours
Postoperative pain at postoperative 6 Hours
Time frame: at postoperative 6 Hours
Postoperative pain at postoperative 12 Hours
Time frame: at postoperative 12 Hours
Postoperative pain at postoperative 24 Hours
Time frame: at postoperative 24 Hours
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 23 Feb 2026.
- Individual participant dataSharing planned: Yes. After the article is accepted by the journal
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Ebru Girgin Dinç, MD principal investigator
İstanbul Medeniyet University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Posterior suprascapular block and Anterior suprascapular block in people with Shoulder Pain and Postoperative Pain, run by Istanbul Medeniyet University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 23 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Postoperative pain at the postoperatively 30 Minutes, 4 Hours, 6Hours, 12Hours, 24Hours (time frame: Up to 24 hours post-operative). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Feb 2026.