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RecruitingNCT04876612Updated May 29, 2024

Effect of Limaprost in Combination With Transforaminal Epidural Steroid Injection

An interventional study of Transforaminal epidural steroid injection (TFESI) in Lumbar Spinal Stenosis, sponsored by Seoul National University. Recruiting at 1 site in Korea, Republic of. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2024-05-29.

Sponsored by Seoul National University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Jun 2025, 1 year 4 months ago, but the record still lists the study as recruiting.
  • Started Nov 2021; still recruiting 5 years later.
Phase
Not applicable
Study type
Interventional
Enrollment
104
Allocation
Randomized
Ages
18 Years to 85 Years
Sex
All
01

Study summary

The purpose of this study was to compare the effects of limaprost(Opalmon® ) on walking ability, low back pain and leg pain after transforaminal epidural steroid injection (TFESI) was administered compared to the placebo group.

Read the detailed description

This study is a prospective, randomized, comparative clinical study that is assigned to a placebo group or a trial group before transforaminal epidural steroid injection (TFESI) is performed.

The subjects of the study will receive an explanation of the study and decide to participate voluntarily in patients who have decided to undergo TFESI for neurogenic claudication and low back pain or leg pain due to lumbar spinal canal stenosis (LSS).

All study subjects are presented with TFESI at the level appropriate for their symptoms in the operating room and then returned to the recovery room. All participants will be monitored for non-invasive blood pressure, electrocardiography, heart rate, and peripheral oxyven saturation during and after the procedure.

Patients assigned to the placebo group will take placebo three times a day and one tablet once from the first day after receiving TFESI. Patients assigned to the trial group will take limaprost (Opalmon®) three times a day, one tablet once from the first day after receiving TFESI. In both groups, the drug was administered for 12 weeks.

In both groups, during the first 4 weeks, no drug changes or additional procedures were observed, and only Acetaminophen was allowed as a rescue drug.

After TFESI, visits at 4 weeks, 8 weeks and 12 weeks to collect each measurement variable.

02

Conditions studied

  • Lumbar Spinal Stenosis

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03

In context

Spinal Stenosis

458 studies on the registry are indexed under Spinal Stenosis; 105 are open to participants now.

This study's planned enrollment of 104 is above the median of 80 across 281 interventional studies indexed under Spinal Stenosis.

Browse Spinal Stenosis studies →

Lead sponsor

Seoul National University is the lead sponsor of 32 studies on the registry; 10 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 85 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

Patients aged 18 to 85 years

Patients with a new or known diagnosis of lumbar spinal stenosis on Magnetic Resonance Imaging (MRI)

Patients scheduled to undergo TFESI due to low back pain or leg pain

Exclusion criteria

Exclusion Criteria:

Refusal of a patient

Coagulopathy

Systemic infection or local infection at the needle injection site

Patients with lumbar instability

Neoplasms in the needle path

Allergy to amide-type local anesthetics

Decreased cognition to the extent that NRS is incomprehensible

Patients with peripheral vascular disease (including peripheral arterial disease)

Patients taking anticoagulant or antiplatelet drugs

Patients with severe cardiovascular disease or liver or kidney disease

Patinets with cerebral infarction

Patinets with a history of gastrointestinal bleeding

Patinets who have had lumbar spine surgery or are expected to receive it within 12 months

Patients who show positive in the straight leg elevation test

Patients who are allergic or sensitive to limaprost (Opalmon®) and placebo or their ingredients

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
104 participants (estimated)

Study arms

  • Placebo comparator
    Patients who received placebo after transforminal epidural steroid injection

    Patients who took placebo for 12 weeks after TFESI

    Procedure: Transforaminal epidural steroid injection (TFESI)

  • Experimental
    Patients who received limaprost (Opalmon®) after transforaminal epidural steroid injection

    Patients who took limaprost (Opalmon®) for 12 weeks after TFESI

    Procedure: Transforaminal epidural steroid injection (TFESI)

Interventions

  • ProcedureTransforaminal epidural steroid injection (TFESI)

    Well trained pain physician performs all the fluoroscopy-guided transforaminal epidural steroid injection (TFESI), who is not involved in evaluating study variables. Electrocardiography, noninvasive blood pressure, heart rate, and peripheral oxygen saturation were monitored for all patients before, while, and after conducting procedure. For TFESI, patients are prone positioned, and skin preparation on injection site is done with chlorohexidine. Procedure is conducted under fluoroscopy guidance at the patient's symptom complaining level. After confirming with a contrast medium, 3 ml of 0.1875% ropivacaine and 5 mg of dexamethasone are administered.

06

What researchers measure

Primary outcomes

  1. ODI (Oswestry Disability Index) change

    The change in ODI compared to the baseline was measured at the outpatient visit.

    Time frame: 4 weeks after placebo or limaprost (Opalmon®)

Secondary outcomes

  1. ODI (Oswestry Disability Index) change

    The change in ODI compared to the baseline was measured at the outpatient visit.

    Time frame: 8 weeks after placebo or limaprost (Opalmon®)

  2. ODI (Oswestry Disability Index) change

    The change in ODI compared to the baseline was measured at the outpatient visit.

    Time frame: 12 weeks after placebo or limaprost (Opalmon®)

  3. Treadmill test change

    The change in treadmill test compared to the baseline was measured at the outpatient visit.

    Time frame: 4 weeks after placebo or limaprost (Opalmon®)

  4. Treadmill test change

    The change in treadmill test compared to the baseline was measured at the outpatient visit.

    Time frame: 8 weeks after placebo or limaprost (Opalmon®)

  5. Treadmill test change

    The change in treadmill test compared to the baseline was measured at the outpatient visit.

    Time frame: 12 weeks after placebo or limaprost (Opalmon®)

  6. Numeric Rating Scale (NRS) change

    The change in NRS compared to the baseline was measured at the outpatient visit.

    Time frame: 4 weeks after placebo or limaprost (Opalmon®)

  7. Numeric Rating Scale (NRS) change

    The change in NRS compared to the baseline was measured at the outpatient visit.

    Time frame: 8 weeks after placebo or limaprost (Opalmon®)

  8. Numeric Rating Scale (NRS) change

    The change in NRS compared to the baseline was measured at the outpatient visit.

    Time frame: 12 weeks after placebo or limaprost (Opalmon®)

  9. Euroqol-5 Dimensions Questionnaire (EQ-5D) change

    The change in EQ-5D compared to the baseline was measured at the outpatient visit.

    Time frame: 4 weeks after placebo or limaprost (Opalmon®)

  10. Euroqol-5 Dimensions Questionnaire (EQ-5D) change

    The change in EQ-5D compared to the baseline was measured at the outpatient visit.

    Time frame: 8 weeks after placebo or limaprost (Opalmon®)

  11. Euroqol-5 Dimensions Questionnaire (EQ-5D) change

    The change in EQ-5D compared to the baseline was measured at the outpatient visit.

    Time frame: 12 weeks after placebo or limaprost (Opalmon®)

  12. Beck Depression Inventory (BPI) change

    The change in BPI compared to the baseline was measured at the outpatient visit.

    Time frame: 4 weeks after placebo or limaprost (Opalmon®)

  13. Beck Depression Inventory (BPI) change

    The change in BPI compared to the baseline was measured at the outpatient visit.

    Time frame: 8 weeks after placebo or limaprost (Opalmon®)

  14. Beck Depression Inventory (BPI) change

    The change in BPI compared to the baseline was measured at the outpatient visit.

    Time frame: 12 weeks after placebo or limaprost (Opalmon®)

  15. Changes in analgesic drugs

    The change in analgesic drugs compared to the baseline was measured at the outpatient visit.

    Time frame: 12 weeks after placebo or limaprost (Opalmon®)

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Nov 2021 (actual). Primary completion is estimated for Jun 2025, 43 months after the start.

Of 105 non-industry interventional studies with no phase under Spinal Stenosis, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 46. This study's planned 43 months is above that.

Counting every sponsor, half of 123 studies reached it within 30 months; a quarter within 12 and three quarters within 50.

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

Registered
May 3, 2021
First posted
May 6, 2021
StartActual
Nov 10, 2021
Primary completionEst.
Jun 30, 2025
CompletionEst.
Aug 31, 2025
Last update
May 29, 2024
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 May 29, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04876612
Lead sponsor
Seoul National University
Collaborators
SMG-SNU Boramae Medical Center
Responsible party
Jeeyoun Moon (Associate Professor, Seoul National University) — Principal investigator
First posted
May 6, 2021
Start date
Nov 10, 2021
Primary completion
Jun 30, 2025 (estimated)
Completion
Aug 31, 2025 (estimated)
Last update
May 29, 2024

Study contacts

Youn Moon Jee, MD, PhD
Contact
jymoon0901@gmail.com
821052992036
Jeongsoo Kim, MD
Contact
dreamsu457@gmail.com
821047346422
Youn Moon Jee, MD, PhD
study director · Seoul National University Hospital
Jeongsoo Kim, MD
principal investigator · SMG-SNU Boramae Medical Center

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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