Impact OF Cooled Versus Thermal Radiofrequency Denervation In Management Of Chronic Lumber Facet Joint Pain

NCT ID: NCT07309731

Last Updated: 2026-01-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

NA

Total Enrollment

100 participants

Study Classification

INTERVENTIONAL

Study Start Date

2026-01-15

Study Completion Date

2026-10-01

Brief Summary

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Chronic lumber facet joint pain is defined according to international association of study of pain (IASP)as multifactorial phenomenon of pain that persist more than 3 months after an injury and /or beyond the usual course of an acute lumber facet pain or a reasonable time for a comparable injury to heal .

lumber facet joint degeneration (LRFJ) is the 1st source of chronic low back pain with an incidence of 15% t o 45 % among patients with low back pain . the spinal facet joint has an abundant nerve supply ; therefore, pain can be caused by arthritic change, degenerative change, inflammation, and injury .

Degeneration of all LFJs (lumbar facet joints) was diagnosed using magnetic resonance image (MRI) , the most sensitive and diagnostic tool. Thus, hypertrophy, degeneration, and the accumulation of fluid within the joints are signs of LFJ degeneration it was found in all treated LFJs .

facet joint pain management can be achieved using medical therapy or facet joint therapeutic interventions, ultrasound guided injection,or fluoroscopically guided facet joint injection (FJI) , medial branch block (MBB) , or radiofrequency ablation .

Radiofrequency is a minimally invasive procedure and is operated under light

intravenous sedation or local anesthesia when necessary. Radiofrequency

energy is delivered to the target nerves through an insulated needle , and this

energy heats and denatures the nerve for the purpose of pain relief . The

radiofrequency techniques include, thermal, and cooled radiofrequency .

thermal radiofrequency (TRFA) uses more energy and higher temperature compared

with cooled radiofrequency , cooled radiofrequency ablation (CRFA) is a

newer technique, and may have some theoretical advantages over traditional

radiofrequency whereas , cooled radiofrequency adopts internally probes to

increase lesion size , and it can increase the chance of complete denervation .

based on heat neurotomy (60°C (celsius) vs. 80°C in TRFA) with the resulting ablative area twice as long and extending distally from the tip of the electrode.

Detailed Description

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Conditions

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Lumber Facet Joint Pain(Lower Back Pain ) Relief by Cooled Radiofrequency or Thermal Radiofrequency Denervation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

DOUBLE

Participants Outcome Assessors

Study Groups

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thermal radio frequency denervation (T) group

The medial branch of the dorsal spinal ramus is the main target .The fluoroscopy will be then placed at slightly oblique view . An 22-gauge insulated RF needle with 1 cm active tip will be used .the parameters of Radiofrequency Denervation treatment are : the tip temperature being at 80 °C, 45V (volt), the frequency 2 Hz for 120 s, three cycles with rotation of the needle each time. At the end of the radiofrequency(RF)procedure, after the probe is removed , 20 mg methylprednisolone acetate will be given through the RF needle for each level

Group Type ACTIVE_COMPARATOR

thermal radio frequency denervation

Intervention Type DEVICE

The medial branch of the dorsal spinal ramus is the main target .The fluoroscopy will be then placed at slightly oblique view . An 22-gauge insulated RF needle with 1 cm active tip will be used .the parameters of Radiofrequency Denervation treatment are : the tip temperature being at 80 °C, 45V, the frequency 2 Hz for 120 s, three cycles with rotation of the needle each time. At the end of the RF procedure, after the probe is removed , 20 mg methylprednisolone acetate will be given through the RF needle for each level

Cooled Radiofrequency denervation (C) group

Patients will positioned prone with a C-arm fluoroscopy. 22-gauge spinal needles were placed in the appropriate location as lumbar medial branch blocks in Spinal Intervention Society Guidelines . 17-gauge 4 mm active tipped CRFA electrodes were used for the procedure . The CRFA (cooled radio frequency ablation) electrodes were also placed in the appropriate location similar to described as lumbar medial branch blocks procedure, instead of traditional placement of electrodes described as in Spinal Intervention Society Guidelines.The RFA generator temperature set to 60°C (intralesional temperature \>80°) for 150 seconds for each

Group Type ACTIVE_COMPARATOR

Cooled Radiofrequency denervation

Intervention Type DEVICE

Patients will positioned prone with a C-arm fluoroscopy. 22-gauge spinal needles were placed in the appropriate location as lumbar medial branch blocks in Spinal Intervention Society Guidelines . 17-gauge 4 mm active tipped CRFA electrodes were used for the procedure . The CRFA electrodes were also placed in the appropriate location similar to described as lumbar medial branch blocks procedure, instead of traditional placement of electrodes described as in Spinal Intervention Society Guidelines.The RFA (radio frequency ablation) generator temperature set to 60°C (intralesional temperature \>80°) for 150 seconds for each

Interventions

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thermal radio frequency denervation

The medial branch of the dorsal spinal ramus is the main target .The fluoroscopy will be then placed at slightly oblique view . An 22-gauge insulated RF needle with 1 cm active tip will be used .the parameters of Radiofrequency Denervation treatment are : the tip temperature being at 80 °C, 45V, the frequency 2 Hz for 120 s, three cycles with rotation of the needle each time. At the end of the RF procedure, after the probe is removed , 20 mg methylprednisolone acetate will be given through the RF needle for each level

Intervention Type DEVICE

Cooled Radiofrequency denervation

Patients will positioned prone with a C-arm fluoroscopy. 22-gauge spinal needles were placed in the appropriate location as lumbar medial branch blocks in Spinal Intervention Society Guidelines . 17-gauge 4 mm active tipped CRFA electrodes were used for the procedure . The CRFA electrodes were also placed in the appropriate location similar to described as lumbar medial branch blocks procedure, instead of traditional placement of electrodes described as in Spinal Intervention Society Guidelines.The RFA (radio frequency ablation) generator temperature set to 60°C (intralesional temperature \>80°) for 150 seconds for each

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Patient's acceptance .
* Both sexes (male and female).
* Age between 30 and 70 years .
* Physical status; ASA I , II. (American society of anesthesiologist)
* BMI; 22-30 Kg/m2.
* Presence of

1. Chronic Lumbar Facet Joint Pain (numerical rating scale (NRS) ≥ 6) lasting for 3 months or more without any response to noninvasive conservative treatment methods like NSAIDs and gabapentin therapy for pain control, or physiotherapy,
2. Patients have two to three levels of bilateral facet arthropathy with normal motor power of lower extremities
3. Local paraspinal tenderness with increased pain on hyperextension, rotation, or lateral bending of the lower lumbar spine.
* More than or equal to 50% temporary pain relief following an ultrasound guided diagnostic medial branch block with local anesthetic corticosteroid injection.

Exclusion Criteria

* Those with spondylolisthesis or disc herniation or internal disc disruption (IDD).
* Previous spinal surgery at the level to be treated , Spinal canal stenosis or spinal instability.
* Patient with previous radiofrequency ablation.
* Patients having radicular pain, neurogenic claudication, or neurological deficits.
* Coagulopathy, bleeding disorders .
* Allergy to medications or contrast to be used .
* Rheumatic disorders.
* Systemic infections, or local infections in the field of intervention .
* Any uncontrolled medical or psychiatric condition .
* Pregnancy, lactating women .
Minimum Eligible Age

30 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Zagazig University

OTHER_GOV

Sponsor Role lead

Responsible Party

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manal mohamed rashad

lecturer

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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khadeja m elhossieny, MD

Role: PRINCIPAL_INVESTIGATOR

Zagazig University

Locations

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Faculty of Medicine,Zagazig University

Zagazig, Elsharqya, Egypt

Site Status RECRUITING

Faculty of Medicine,Zagazig University

Zagazig, Elsharqya, Egypt

Site Status RECRUITING

Countries

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Egypt

Central Contacts

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manal M rashad, MD

Role: CONTACT

01005671564 ext. 002

Facility Contacts

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Khadeja M El-Hossieny, MD

Role: primary

01015706099 ext. 002

MANAL M RASHAD, MD

Role: primary

01005671564 ext. 002

References

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Other Identifiers

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1788/2-Nov-2025

Identifier Type: -

Identifier Source: org_study_id

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