Lumbar Spinal FusionMERFUSIONNCT04904575
Erector Spinae Plane Block in Lumbar Spinal Fusion
A study testing Erector spinae plane block in people with Lumbar Spinal Fusion, run by Clinique Saint Jean, France at 1 site in France.
Trial summary
The aim of this study is to observe or not a reduction in the consumption of morphine within 72 hours of the realization of an erector spinae plane block when preparing for a lumbar spinal fusion. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Lumbar Spinal Fusion
- What is being tested?
- Erector spinae plane block
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 130 participants
- Where
- 1 siteFrance
- Study dates
- 3 Jan 2022to 31 Dec 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Patient with medical insurance.
- Patient who received information about study and signes a consent to participate in the study.
- Major patient requiring a lumbar spinal fusion surgery.
- Patient with an ASA score of 1, 2 or 3.
Who cannot join
- Minor patient.
- Patient with morphine intolerance
- Patient with allergy to local anesthetics.
- Patient consuming morphine for more than 3 months.
- Pregnant or breastfeeding patient.
- Patient scheduled for cancer surgery or trauma surgery.
Show all 13Show fewer
- Patient participating in another interventional study.
- Patient with history of lumbar spinal fusion.
- Patient requiring lumbar surgery without arthrodesis.
- Patient requiring lumbar surgery with inter-lamar or inter-epineal stabilization.
- Patient refusing to sign the consent form.
- Patient for whom it is impossible to give informed information.
- Patient under the protection of justice, under curatorship or under tutorship.
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
France1 site, 1 recruiting
- Recruiting
Clinique Saint Jean
Saint-Jean-de-Védas, 34430
Julie SOULIER, 04 67 61 20 71 ext. +33, julie.soulier@capsante.fr
Guillaume LONJON, MD
About this study
Official title: Erector Spinae Plane Block in Lumbar Spinal Fusion : Double-blind, Randomized Controlled Trial.
The aim of this study is to observe or not a reduction in the consumption of morphine within 72 hours of the realization of an erector spinae plane block when preparing for a lumbar spinal fusion.
Read the detailed description
Posterior lumbar spine surgery is surgery described by patients as painful. For this type of surgery, lumbar spinal fusion, especially because of greater exposure, is more painful than simple surgeries to release the lumbar canal or to cure a herniated disc. However, the improvement of implants and techniques, as well as the change in the habits of surgeons, means that this lumbar spinal is on the increase (+ 65%). The management of postoperative pain is a priority for anesthesiologic teams with a goal to improved rehabilitation after surgery.
Multimodal analgesia, already recognized for other surgeries, is one of the keys to success, combining oral analgesics and regional local anesthetics.
The recourse to the realization of a erector spinae plane block was described for the first time in 2016, it is described as not presenting any particular risk, simple to apply and having a satisfactory analgesia action. However, this process is little described in the context of spine surgery and even less in the context of randomized controlled trials. On the other hand, no study has evaluated the effectiveness of spinal block as part of an Enhanced Rehabilitation After Surgery (RAAC) program.
At the Clinique Saint Jean Sud de France, the management of spine surgeries is part of an Improved Rehabilitation After Surgery (RAAC) process. Patients benefit from multidisciplinary preoperative information and perioperative management promoting early mobilization and postoperative rehabilitation.
It seemed relevant to carry out a randomized, controlled, double-blind study to evaluate the consumption of postoperative morphine during the 72 hours following a lumbar spinal fusion.
The studied process will be the realization of a ultrasound guided erector spinae plane block.
The realization of the erector spinae plane block is carried out as part of lumbar spinal fusion surgery on 1 or 2 levels.
As part of this study, 130 patients will be randomized into 2 arms: one arm receiving the anesthetic and another arm receiving the placebo. As the study is double blind, both arms will benefit from the same procedure. Patients in the block arm will receive an injection of levobupivacaine 2.5 mg / ml while the patients in the placebo arm will receive an injection of physiological saline (NaCL 0,9%) in the same proportions.
The data necessary for this study will be collected directly from the patient and from his medical file according to the following schedule: 3h, 4h, 6h, 9h, 12h, 18h, 24h, 36h, 48h, 72h and 1 month after realization of the erector spinae plane block.
- Conditions
- Lumbar Spinal Fusion
- Being tested
- Erector spinae plane block
- Keywords
- Erector spinae plane block, consumption of morphine
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Erector spinae plane blockProcedure or surgery
Procedure : After installing the sleeping patient and identifying the surgical level by the surgeon, the anesthetist will perform the erector spinae plane block. The anesthetist performs an ultrasound to view the spine and erector muscles and identifies the transverse processes of the vertebra involved in the surgery. Once the location has been made, the anesthetist injects the anesthetic product under ultrasound control between the erector muscle of the spine and its anterior fascia, the trajectory of the needle being thus visualized throughout the procedure. The anesthetist bilaterally injects 3ml/kg of solution with a maximum of 30ml injected.
Drug : Levobupivacaïne 2,5mg/ml.
Erector spinae plane blockProcedure or surgery
Procedure : After installing the sleeping patient and identifying the surgical level by the surgeon, the anesthetist will perform the erector spinae plane block. The anesthetist performs an ultrasound to view the spine and erector muscles and identifies the transverse processes of the vertebra involved in the surgery. Once the location has been made, the anesthetist injects the anesthetic product under ultrasound control between the erector muscle of the spine and its anterior fascia, the trajectory of the needle being thus visualized throughout the procedure. The anesthetist bilaterally injects 3ml/kg of solution with a maximum of 30ml injected.
Drug : NaCL 0,9%.
| Study group | Role | What they receive |
|---|---|---|
| Block | Experimental | The "Block" group will be made up of patients who will benefit from an injection of levobupivacaine for the realization of the erector spinae plane block. Receives: Procedure: Erector spinae plane block |
| Placebo | Placebo comparator | The "placebo" group corresponds to the reference group, that is to say that it will consist of patients who will benefit from an injection of physiological serum for the realization of the erector spinae plane block. Receives: Procedure: Erector spinae plane block |
What is being measured
The primary outcome is the main question the study is designed to answer.
Consumption of postoperative morphine within 72 hours of the operation.
Measured: 72 hours
Secondary outcomes (4)
Digital visual scale to assess pain of patient within 72 hours of the operation.
Numeric scale numbered from 0 to 10. 0 : no pain, 10: worst pain possible
Measured: 72 hours
Onset of nausea and vomiting within 72 hours of the operation.
Onset of nausea/ vomiting or taking an anti-vomiting treatment within 72 hours of the operation.
Measured: 72 hours
Onset of complication within 30 days of the intervention.
Measured: 30 days
Walking perimeter measurement by the physiotherapist during the 72 hours following the intervention.
Measurement of the maximum distance traveled without stopping in meter with or without assistance.
Measured: 72 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 May 2021
- Study start3 Jan 2022
- Primary completion31 Dec 2026 (estimated)
- Study completion31 Dec 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for Lumbar Spinal FusionStudies 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
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 130 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Clinique Saint Jean, France
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Guillaume LONJON, MD, Principal investigator, Clinique Saint Jean, Saint Jean de Védas
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04904575
- Sponsor's protocol ID
- LOCAL2020-GL01
- Acronym
- MERFUSION
- Status last verified
- Nov 2025
- First submitted
- 17 May 2021
- Last updated
- 24 Nov 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Chen K, Wang L, Ning M, Dou L, Li W, Li Y. Evaluation of ultrasound-guided lateral thoracolumbar interfascial plane block for postoperative analgesia in lumbar spine fusion surgery: a prospective, randomized, and controlled clinical trial. PeerJ. 2019 Oct 28;7:e7967. doi: 10.7717/peerj.7967. eCollection 2019.
PubMed 31681518Ren Z, Li Z, Li S, Sheng L, Xu D, Chen X, Wu WKK, Chan MTV, Ho J. Local infiltration with cocktail analgesics during 2 level lumbar spinal fusion surgery: Study protocol of a randomized controlled trial. Medicine (Baltimore). 2019 May;98(19):e15526. doi: 10.1097/MD.0000000000015526.
PubMed 31083198Breebaart MB, Van Aken D, De Fre O, Sermeus L, Kamerling N, de Jong L, Michielsen J, Roelant E, Saldien V, Versyck B. A prospective randomized double-blind trial of the efficacy of a bilateral lumbar erector spinae block on the 24h morphine consumption after posterior lumbar inter-body fusion surgery. Trials. 2019 Jul 17;20(1):441. doi: 10.1186/s13063-019-3541-y.
PubMed 31315670Forero M, Adhikary SD, Lopez H, Tsui C, Chin KJ. The Erector Spinae Plane Block: A Novel Analgesic Technique in Thoracic Neuropathic Pain. Reg Anesth Pain Med. 2016 Sep-Oct;41(5):621-7. doi: 10.1097/AAP.0000000000000451.
PubMed 27501016Qiu Y, Zhang TJ, Hua Z. Erector Spinae Plane Block for Lumbar Spinal Surgery: A Systematic Review. J Pain Res. 2020 Jul 1;13:1611-1619. doi: 10.2147/JPR.S256205. eCollection 2020.
PubMed 32669870Ince I, Atalay C, Ozmen O, Ozturk V, Hassan M, Aksoy M, Calikoglu C. Comparison of ultrasound-guided thoracolumbar interfascial plane block versus wound infiltration for postoperative analgesia after single-level discectomy. J Clin Anesth. 2019 Sep;56:113-114. doi: 10.1016/j.jclinane.2019.01.017. Epub 2019 Feb 8. No abstract available.
PubMed 30743153Cesur S, Yayik AM, Ozturk F, Ahiskalioglu A. Ultrasound-guided Low Thoracic Erector Spinae Plane Block for Effective Postoperative Analgesia after Lumbar Surgery: Report of Five Cases. Cureus. 2018 Nov 16;10(11):e3603. doi: 10.7759/cureus.3603.
PubMed 30680264Mathiesen O, Dahl B, Thomsen BA, Kitter B, Sonne N, Dahl JB, Kehlet H. A comprehensive multimodal pain treatment reduces opioid consumption after multilevel spine surgery. Eur Spine J. 2013 Sep;22(9):2089-96. doi: 10.1007/s00586-013-2826-1. Epub 2013 May 17.
PubMed 23681498Davies AF, Segar EP, Murdoch J, Wright DE, Wilson IH. Epidural infusion or combined femoral and sciatic nerve blocks as perioperative analgesia for knee arthroplasty. Br J Anaesth. 2004 Sep;93(3):368-74. doi: 10.1093/bja/aeh224. Epub 2004 Jul 9.
PubMed 15247111Benyahia NM, Verster A, Saldien V, Breebaart M, Sermeus L, Vercauteren M. Regional anaesthesia and postoperative analgesia techniques for spine surgery - a review. Rom J Anaesth Intensive Care. 2015 Apr;22(1):25-33.
PubMed 28913452Tsui BCH, Fonseca A, Munshey F, McFadyen G, Caruso TJ. The erector spinae plane (ESP) block: A pooled review of 242 cases. J Clin Anesth. 2019 Mar;53:29-34. doi: 10.1016/j.jclinane.2018.09.036. Epub 2018 Oct 3.
PubMed 30292068Kendall MC, Alves L, Traill LL, De Oliveira GS. The effect of ultrasound-guided erector spinae plane block on postsurgical pain: a meta-analysis of randomized controlled trials. BMC Anesthesiol. 2020 May 1;20(1):99. doi: 10.1186/s12871-020-01016-8.
PubMed 32357842Nielsen RV, Fomsgaard JS, Dahl JB, Mathiesen O. Insufficient pain management after spine surgery. Dan Med J. 2014 May;61(5):A4835.
PubMed 24814741Gerbershagen HJ, Aduckathil S, van Wijck AJ, Peelen LM, Kalkman CJ, Meissner W. Pain intensity on the first day after surgery: a prospective cohort study comparing 179 surgical procedures. Anesthesiology. 2013 Apr;118(4):934-44. doi: 10.1097/ALN.0b013e31828866b3.
PubMed 23392233
Study at a glance
From the registry record, last updated by the sponsor on 24 Nov 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Erector Spinae Plane Block in Lumbar Spinal Fusion : Double-blind, Randomized Controlled Trial.
- ClinicalTrials.gov ID
- NCT04904575
- Acronym / sponsor ID
- MERFUSION / LOCAL2020-GL01
- Conditions
- Lumbar Spinal Fusion
- Keywords
- Erector spinae plane block, consumption of morphine
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 130 participants (estimated)
- Lead sponsor
- Clinique Saint Jean, FranceUniversity, hospital or other
- Study start
- 3 Jan 2022 (actual)
- Primary completion
- 31 Dec 2026 (estimated)
- Study completion
- 31 Dec 2026 (estimated)
- First posted
- 27 May 2021 (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.
The aim of this study is to observe or not a reduction in the consumption of morphine within 72 hours of the realization of an erector spinae plane block when preparing for a lumbar spinal fusion.
Detailed description
Posterior lumbar spine surgery is surgery described by patients as painful. For this type of surgery, lumbar spinal fusion, especially because of greater exposure, is more painful than simple surgeries to release the lumbar canal or to cure a herniated disc. However, the improvement of implants and techniques, as well as the change in the habits of surgeons, means that this lumbar spinal is on the increase (+ 65%). The management of postoperative pain is a priority for anesthesiologic teams with a goal to improved rehabilitation after surgery.
Multimodal analgesia, already recognized for other surgeries, is one of the keys to success, combining oral analgesics and regional local anesthetics.
The recourse to the realization of a erector spinae plane block was described for the first time in 2016, it is described as not presenting any particular risk, simple to apply and having a satisfactory analgesia action. However, this process is little described in the context of spine surgery and even less in the context of randomized controlled trials. On the other hand, no study has evaluated the effectiveness of spinal block as part of an Enhanced Rehabilitation After Surgery (RAAC) program.
At the Clinique Saint Jean Sud de France, the management of spine surgeries is part of an Improved Rehabilitation After Surgery (RAAC) process. Patients benefit from multidisciplinary preoperative information and perioperative management promoting early mobilization and postoperative rehabilitation.
It seemed relevant to carry out a randomized, controlled, double-blind study to evaluate the consumption of postoperative morphine during the 72 hours following a lumbar spinal fusion.
The studied process will be the realization of a ultrasound guided erector spinae plane block.
The realization of the erector spinae plane block is carried out as part of lumbar spinal fusion surgery on 1 or 2 levels.
As part of this study, 130 patients will be randomized into 2 arms: one arm receiving the anesthetic and another arm receiving the placebo. As the study is double blind, both arms will benefit from the same procedure. Patients in the block arm will receive an injection of levobupivacaine 2.5 mg / ml while the patients in the placebo arm will receive an injection of physiological saline (NaCL 0,9%) in the same proportions.
The data necessary for this study will be collected directly from the patient and from his medical file according to the following schedule: 3h, 4h, 6h, 9h, 12h, 18h, 24h, 36h, 48h, 72h and 1 month after realization of the erector spinae plane block.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Block | Experimental | Procedure: Erector spinae plane blockThe "Block" group will be made up of patients who will benefit from an injection of levobupivacaine for the realization of the erector spinae plane block. |
| Placebo | Placebo comparator | Procedure: Erector spinae plane blockThe "placebo" group corresponds to the reference group, that is to say that it will consist of patients who will benefit from an injection of physiological serum for the realization of the erector spinae plane block. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Patient with medical insurance.
- Patient who received information about study and signes a consent to participate in the study.
- Major patient requiring a lumbar spinal fusion surgery.
- Patient with an ASA score of 1, 2 or 3.
Key exclusion criteria (13 listed)
- Minor patient.
- Patient with morphine intolerance
- Patient with allergy to local anesthetics.
- Patient consuming morphine for more than 3 months.
- Pregnant or breastfeeding patient.
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 |
|---|---|---|
| Erector spinae plane blockProcedure : After installing the sleeping patient and identifying the surgical level by the surgeon, the anesthetist will perform the erector spinae plane block. The anesthetist performs an ultrasound to view the spine and erector muscles and identifies the transverse processes of the vertebra involved in the surgery. Once the location has been made, the anesthetist injects the anesthetic product under ultrasound control between the erector muscle of the spine and its anterior fascia, the trajectory of the needle being thus visualized throughout the procedure. The anesthetist bilaterally injects 3ml/kg of solution with a maximum of 30ml injected. Drug : Levobupivacaïne 2,5mg/ml. | Procedure or surgery | Block |
| Erector spinae plane blockProcedure : After installing the sleeping patient and identifying the surgical level by the surgeon, the anesthetist will perform the erector spinae plane block. The anesthetist performs an ultrasound to view the spine and erector muscles and identifies the transverse processes of the vertebra involved in the surgery. Once the location has been made, the anesthetist injects the anesthetic product under ultrasound control between the erector muscle of the spine and its anterior fascia, the trajectory of the needle being thus visualized throughout the procedure. The anesthetist bilaterally injects 3ml/kg of solution with a maximum of 30ml injected. Drug : NaCL 0,9%. | Procedure or surgery | Placebo |
Primary outcome
Consumption of postoperative morphine within 72 hours of the operation.
Time frame: 72 hours
4 secondary outcomes
Digital visual scale to assess pain of patient within 72 hours of the operation.
Time frame: 72 hours
Onset of nausea and vomiting within 72 hours of the operation.
Time frame: 72 hours
Onset of complication within 30 days of the intervention.
Time frame: 30 days
Walking perimeter measurement by the physiotherapist during the 72 hours following the intervention.
Time frame: 72 hours
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Nov 2025.
- Background: PubMed 31681518Chen K, Wang L, Ning M, Dou L, Li W, Li Y. Evaluation of ultrasound-guided lateral thoracolumbar interfascial plane block for postoperative analgesia in lumbar spine fusion surgery: a prospective, randomized, and controlled clinical trial. PeerJ. 2019 Oct 28;7:e7967. doi: 10.7717/peerj.7967. eCollection 2019.
- Background: PubMed 31083198Ren Z, Li Z, Li S, Sheng L, Xu D, Chen X, Wu WKK, Chan MTV, Ho J. Local infiltration with cocktail analgesics during 2 level lumbar spinal fusion surgery: Study protocol of a randomized controlled trial. Medicine (Baltimore). 2019 May;98(19):e15526. doi: 10.1097/MD.0000000000015526.
- Background: PubMed 31315670Breebaart MB, Van Aken D, De Fre O, Sermeus L, Kamerling N, de Jong L, Michielsen J, Roelant E, Saldien V, Versyck B. A prospective randomized double-blind trial of the efficacy of a bilateral lumbar erector spinae block on the 24h morphine consumption after posterior lumbar inter-body fusion surgery. Trials. 2019 Jul 17;20(1):441. doi: 10.1186/s13063-019-3541-y.
- Background: PubMed 27501016Forero M, Adhikary SD, Lopez H, Tsui C, Chin KJ. The Erector Spinae Plane Block: A Novel Analgesic Technique in Thoracic Neuropathic Pain. Reg Anesth Pain Med. 2016 Sep-Oct;41(5):621-7. doi: 10.1097/AAP.0000000000000451.
- Background: PubMed 32669870Qiu Y, Zhang TJ, Hua Z. Erector Spinae Plane Block for Lumbar Spinal Surgery: A Systematic Review. J Pain Res. 2020 Jul 1;13:1611-1619. doi: 10.2147/JPR.S256205. eCollection 2020.
- Background: PubMed 30743153Ince I, Atalay C, Ozmen O, Ozturk V, Hassan M, Aksoy M, Calikoglu C. Comparison of ultrasound-guided thoracolumbar interfascial plane block versus wound infiltration for postoperative analgesia after single-level discectomy. J Clin Anesth. 2019 Sep;56:113-114. doi: 10.1016/j.jclinane.2019.01.017. Epub 2019 Feb 8. No abstract available.
- Background: PubMed 30680264Cesur S, Yayik AM, Ozturk F, Ahiskalioglu A. Ultrasound-guided Low Thoracic Erector Spinae Plane Block for Effective Postoperative Analgesia after Lumbar Surgery: Report of Five Cases. Cureus. 2018 Nov 16;10(11):e3603. doi: 10.7759/cureus.3603.
- Background: PubMed 23681498Mathiesen O, Dahl B, Thomsen BA, Kitter B, Sonne N, Dahl JB, Kehlet H. A comprehensive multimodal pain treatment reduces opioid consumption after multilevel spine surgery. Eur Spine J. 2013 Sep;22(9):2089-96. doi: 10.1007/s00586-013-2826-1. Epub 2013 May 17.
- Background: PubMed 15247111Davies AF, Segar EP, Murdoch J, Wright DE, Wilson IH. Epidural infusion or combined femoral and sciatic nerve blocks as perioperative analgesia for knee arthroplasty. Br J Anaesth. 2004 Sep;93(3):368-74. doi: 10.1093/bja/aeh224. Epub 2004 Jul 9.
- Background: PubMed 28913452Benyahia NM, Verster A, Saldien V, Breebaart M, Sermeus L, Vercauteren M. Regional anaesthesia and postoperative analgesia techniques for spine surgery - a review. Rom J Anaesth Intensive Care. 2015 Apr;22(1):25-33.
- Background: PubMed 30292068Tsui BCH, Fonseca A, Munshey F, McFadyen G, Caruso TJ. The erector spinae plane (ESP) block: A pooled review of 242 cases. J Clin Anesth. 2019 Mar;53:29-34. doi: 10.1016/j.jclinane.2018.09.036. Epub 2018 Oct 3.
- Background: PubMed 32357842Kendall MC, Alves L, Traill LL, De Oliveira GS. The effect of ultrasound-guided erector spinae plane block on postsurgical pain: a meta-analysis of randomized controlled trials. BMC Anesthesiol. 2020 May 1;20(1):99. doi: 10.1186/s12871-020-01016-8.
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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.
Guillaume LONJON, MD principal investigator
Clinique Saint Jean, Saint Jean de Védas
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Erector spinae plane block in people with Lumbar Spinal Fusion, run by Clinique Saint Jean, France at 1 site in France.
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 4 inclusion and 13 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: looking for participants now, as of the sponsor's last update on 24 Nov 2025. 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 France. 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. Some participants in this study may receive a placebo. 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?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Julie SOULIER (04 67 61 20 71 ext. +33, julie.soulier@capsante.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Consumption of postoperative morphine within 72 hours of the operation. (time frame: 72 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04904575, which also lists 14 linked publications.
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 24 Nov 2025.