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RecruitingNCT05996133MCPUpdated Sep 5, 2025

Multifidus Cervicis Plane Block Vs. Sham Block For Posterior Cervical Spine Fusion Surgery

A Phase 4 interventional study of Bupivacaine Hcl 0.25% Inj and Normal saline in Cervical Spine Fusion, sponsored by Hartford Hospital. Recruiting at 1 site in United States. Open to participants aged 40 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-09-05.

Sponsored by Hartford Hospital · Phase 4, Interventional, and Supportive care

From the registry’s dates

  • Started Dec 2023; still recruiting 2 years 10 months later.
Phase
Phase 4
Study type
Interventional
Enrollment
38
Allocation
Randomized
Ages
40 Years to 80 Years
Sex
All
01

Study summary

The goal of this randomized, double-blinded, clinical trial is to assess the benefit of administering a Multifidus Cervicis Plane (MCP) block compared to a sham block as a method of postoperative pain control in patients undergoing posterior cervical spine fusion surgery. The main question it aims to answer is if the MCP block group will have reduced maximum pain scores during the first 24 postoperative hours compared to the sham block group.

Participants will receive preoperative bilateral MCP blocks on the back of their neck using the standard of care local anesthetic solution that consists of 30 mLs 0.25% Bupivacaine + 0.5 mL (5 mg) preservative-free Dexamethasone + 0.1 mL Epinephrine (MCP block group). Researchers will compare the MCP block to the preoperative sham block which consists of injecting 3 mL of normal saline into the same area (Sham block group) to compare the postoperative pain scores between the groups as a main objective. The secondary objectives are:

  • Postoperative opioid consumption during hospitalization and at 2 weeks after discharge.
  • The amount and type of non-opioid analgesics used during hospitalization.
  • The occurrence of postoperative nausea and vomiting (PONV) and the use of antiemetics.
  • Hospital and Post Anesthesia Care Unit length of stay (LOS).
  • Monitor the safety of the study interventions during hospitalization and readmissions within 30 days of discharge.
  • Patient satisfaction with pain management and overall satisfaction with the surgery experience.
02

Conditions studied

  • Cervical Spine Fusion

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Keywords

  • Posterior cervical spine fusion surgery
  • Multifidus Cervicis Plane Block
03

In context

Klippel-Feil Syndrome

27 studies on the registry are indexed under Klippel-Feil Syndrome; 10 are open to participants now.

This study's planned enrollment of 38 is below the median of 60 across 16 interventional studies indexed under Klippel-Feil Syndrome.

Browse Klippel-Feil Syndrome studies →

Lead sponsor

Hartford Hospital is the lead sponsor of 105 studies on the registry; 20 are open to participants now.

Of its 14 completed or terminated interventional studies of FDA-regulated products, 5 (36%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Patients 40-80 years old, males and females, of any race and any ethnic group.
  2. Patients are scheduled for elective primary posterior cervical spine fusion surgery (CSFS) to be performed by one of the spine surgeons in the study.
  3. Ability to speak and read English
  4. Patients with American Society of Anesthesiology (ASA) physical status score I- IV

Exclusion criteria

Exclusion Criteria:

  1. Emergency posterior CSFS.
  2. Revision surgery or history of previous cervical spine surgery
  3. History of allergy to local anesthetics or .
  4. Patients who are coagulopathic at the time of surgery
  5. Patients with to MCP blocks, including but not limited to anatomical abnormality or previous surgical intervention that limits or prevents receiving the blocks
  6. Infection at the site of the block.
  7. Weight \< 40 kg to avoid local anesthetic toxicity.
  8. Patients on chronic or continuous opioid use of > 50 MME (morphine milli-equivalent) per day for at least 30 days within 90 days prior to surgery.
  9. Patients with a history of chronic inflammatory conditions such as multiple sclerosis
  10. Refusal to participate or lack of providing the study consent
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 4
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Care provider)
Enrollment
38 participants (estimated)

Study arms

  • Experimental
    MCP Block

    Bilateral Multifidus Cervicis plane block using 30 mL of 0.25% bupivacaine + 0.5 mL (5 mg) preservative-free dexamethasone + 0.1 mL epinephrine 1:400,000.

    Drug: Bupivacaine Hcl 0.25% Inj

  • Sham comparator
    Sham Block

    Bilateral sham block using 3 mL of normal saline injections subcutaneously on the neck.

    Other: Normal saline

Interventions

  • 30 mL of 0.25% bupivacaine + 0.5 mL (5 mg) preservative-free dexamethasone + 0.1 mL epinephrine 1:400,000.

    Also known as: Dexamethasone, Epinephrine

  • OtherNormal saline

    3 mL normal saline

06

What researchers measure

Primary outcomes

  1. The maximum postoperative pain score

    The maximum pain score for the past 24 postoperative hours, on a scale from 0-10 where 0 is no pain and 10 is severe pain reported by participants using the validated tool; Brief Pain Inventory-Short Form.

    Time frame: Up to 24 hours after surgery

Secondary outcomes

  1. The maximum, average, minimum, and current pain scores

    The maximum, average, minimum, and current pain scores for the past 24 hours, on a scale from 0-10 where 0 is no pain and 10 is severe pain, reported by participants daily and up to 72 postoperative hours and at 2 weeks after discharge using the validated tool; Brief Pain Inventory-Short Form.

    Time frame: 0-24 hours; 24-48 hours; 48-72 hours and at 2 weeks (+/- 7 days) after discharge via a phone call.

  2. Total opioid consumption

    The total intraoperative and postoperative opioid consumption will be measured in morphine MilliEquivalent (MME) during hospitalization on the 6th, 12th, 24th, 48th, and 72nd postoperative hours, and at 2 weeks (+/- 7 days) after discharge via a phone call using a question asking if the patient is still using opioids (yes/no)

    Time frame: at 6th, 12th, 24th, 48th, and 72nd postoperative hours, and at 2 weeks (+/- 7 days) after discharge.

  3. Non- opioid analgesics use

    The number of non-opioid analgesics used (frequency), including NSAIDs, muscle relaxants, and gabapentin at any time throughout hospitalization up to 72 hours postoperatively.

    Time frame: Up to 72 hours postoperative

  4. Postoperative nausea/vomiting scores

    Postoperative nausea/vomiting scores will be collected using the Simplified Postoperative Nausea and Vomiting Impact Scale, a validated measure that consists of two questions, each with a possible response score of 0-3. Response score totals of 0-2 require no intervention. Response score totals of 3-4 may necessitate antiemetic medication. Response score totals of 5-6 are considered clinically important nausea requiring medication intervention, as this would constitute patients with excessive vomiting.

    Time frame: Daily at 24th, 48th, and 72th postoperative hours

  5. Hospital and Post Anesthesia Care Unit length of stay

    Hospital and PACU length of stay will be calculated in hours from the date and time of admission and discharge from the electronic medical records.

    Time frame: Up to 72 postoperative hours

  6. The occurrence of block complications

    The occurrence of block complications will be collected during hospitalization will be assessed daily for up to the discharge from the hospital.

    Time frame: Up to 72 postoperative hours

  7. Participant satisfaction with the pain management service and the overall surgery experience

    Using the Customer Satisfaction Score (CSAT) tool, prior to discharge and at 2 weeks (+/- 7 days) after discharge via a phone call by the ARC. By asking participants to rate their satisfaction with pain management service and the overall surgery experience on a five-point scale: 1- very unsatisfied; 2- Unsatisfied; 3- Neutral; 4- Satisfied; and 5- Very satisfied. The metric will be looking specifically at the percentage of happy patients. The CSAT percentage score is calculated by looking at the 4 to 5 ratings. The formula is: (The total Number of 4 and 5 responses) ÷ (Number of total responses) x 100 = % of satisfied patients, a score of 80% will be considered 'good'.

    Time frame: at 72nd postoperative hour and at 2 weeks (+/- 7 days) after discharge via a phone call

  8. Antiemetics used

    The number of doses (frequency) of intra and postoperative antiemetics will be collected up to 72 postop hours.

    Time frame: up to 72 postoperative hours

07

Study locations

1 of 1 sites recruiting
08

References and documents

Publications

  • Brummett CM, Waljee JF, Goesling J, Moser S, Lin P, Englesbe MJ, Bohnert ASB, Kheterpal S, Nallamothu BK. New Persistent Opioid Use After Minor and Major Surgical Procedures in US Adults. JAMA Surg. 2017 Jun 21;152(6):e170504. doi: 10.1001/jamasurg.2017.0504. Epub 2017 Jun 21. PubMed 28403427 ↗
  • Tseng V, Cole C, Schmidt MH, Abramowicz AE, Xu JL. Analgesic efficacy of paraspinal interfascial plane blocks performed with the use of neurophysiology monitoring for posterior cervical laminectomy surgery: a case series. J Spine Surg. 2021 Mar;7(1):109-113. doi: 10.21037/jss-20-644. PubMed 33834133 ↗
  • Youssef JA, Heiner AD, Montgomery JR, Tender GC, Lorio MP, Morreale JM, Phillips FM. Outcomes of posterior cervical fusion and decompression: a systematic review and meta-analysis. Spine J. 2019 Oct;19(10):1714-1729. doi: 10.1016/j.spinee.2019.04.019. Epub 2019 May 7. PubMed 31075361 ↗
  • Raja A, Patel P, Mesfin FB. Spinal Stenosis(Archived). 2023 Jun 12. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2026 Jan-. Available from http://www.ncbi.nlm.nih.gov/books/NBK441989/ PubMed 28723018 ↗
  • Ohgoshi Y, Kurahashi K. Cervical interfascial plane (CIP) block and multifidus cervicis plane (MCP) block: Similarities and tips. J Clin Anesth. 2017 Sep;41:55. doi: 10.1016/j.jclinane.2017.06.014. Epub 2017 Jun 27. No abstract available. PubMed 28802607 ↗
  • Ohgoshi Y, Kubo EN. Inter-semispinal plane block for cervical spine surgery. J Clin Anesth. 2018 May;46:94-95. doi: 10.1016/j.jclinane.2018.02.007. Epub 2018 Feb 9. No abstract available. PubMed 29433034 ↗
  • Mohamed, Z.E., Zarad, C.A., Flifel, M.E. et al. The efficacy of ultrasound-guided multifidus cervicis plane block versus greater occipital nerve block for cervicogenic headache. Egypt J Neurol Psychiatry Neurosurg 57, 11 (2021). https://doi.org/10.1186/s41983-020-00262-4
  • Adamczyk K, Koszela K, Zaczynski A, Niedzwiecki M, Brzozowska-Mankowska S, Gasik R. Ultrasound-Guided Blocks for Spine Surgery: Part 1-Cervix. Int J Environ Res Public Health. 2023 Jan 23;20(3):2098. doi: 10.3390/ijerph20032098. PubMed 36767465 ↗
  • Ahiskalioglu A, Yayik AM, Doymus O, Selvitopi K, Ahiskalioglu EO, Calikoglu C, Alici HA, Karaca O. Efficacy of ultrasound-guided modified thoracolumbar interfascial plane block for postoperative analgesia after spinal surgery: a randomized-controlled trial. Can J Anaesth. 2018 May;65(5):603-604. doi: 10.1007/s12630-018-1051-0. Epub 2018 Jan 9. No abstract available. PubMed 29318534 ↗

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Dec 2023 (actual). Primary completion is estimated for Dec 2026, 36 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 26, 2023
First posted
Aug 16, 2023
StartActual
Dec 12, 2023
Primary completionEst.
Dec 30, 2026
CompletionEst.
Jun 30, 2027
Last update
Sep 5, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 5, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05996133
Lead sponsor
Hartford Hospital
Responsible party
Pranjali P Kainkaryam, MD (Director of Regional Anesthesia & Acute Pain Management, Hartford Hospital) — Principal investigator
First posted
Aug 16, 2023
Start date
Dec 12, 2023
Primary completion
Dec 30, 2026 (estimated)
Completion
Jun 30, 2027 (estimated)
Last update
Sep 5, 2025

Study contacts

Aseel Walker, MD
Contact
aseel.walker@hhchealth.org
(860) 972-1778
Pranjali Kainkaryam, MD
principal investigator · Hartford Hospital

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Bupivacaine

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