Cooled RFA vs Conventional RFA to Manage Chronic Facetogenic Low Back Pain

Chronic Low-back Pain Clinical Trial

— Lumbar CvS  

Official title:

A Prospective, Multi-center, Randomized, Single-Blind Clinical Trial Comparing COOLIEF* Cooled Radiofrequency to Conventional Radiofrequency Ablation of the Medial Branch Nerves in the Management of Chronic Facetogenic Low Back Pain

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT04803149
• Other study ID #: 105-20-0006
• Status: Active, not recruiting
• Phase: N/A
• Start date: February 23, 2021
• Est. completion date: July 2023

Study information

• Verified date: June 2022
• Source: Avanos Medical
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study is being conducted to assess the relative effectiveness of radiofrequency neurotomy in subjects with chronic axial low back pain originating in the lumbar facet joints using the COOLIEF* Cooled Radiofrequency Probe as compared to the same procedure conducted using a Standard Radiofrequency Probe.

Description:

This is a prospective, multi-center, randomized, single-blind comparison study examining the outcomes of subjects with chronic axial low back pain that originates in the lumbar facet joints undergoing a procedure to create a radiofrequency lesion in the medial branch nerves with either Cooled Radiofrequency Ablation (CRFA) or Conventional (Standard) Radiofrequency Ablation (SRFA). Approximately 188 participants from approximately 15 sites will be enrolled into this study, with subjects undergoing either CRFA or SRFA in a 1:1 randomization scheme. Follow-up will be conducted for 12 months post-treatment, with the primary endpoint being completed at month 6. Pain, overall outcome, quality of life, pain medication use, and adverse events will be compared between the two treatment groups to determine success.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 79
• Est. completion date: July 2023
• Est. primary completion date: January 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 21 Years and older

Eligibility

Inclusion Criteria:

1. Age = 21 years

2. Able to understand the informed consent form and provide written informed consent and able to complete outcome measures.

3. Subjects who have chronic axial (non-radicular) low back pain (at least 3 months) attributed to bilateral L4/L5, L5/S1 lumbar facet joint arthropathy based on clinical evaluation (paraspinal tenderness in the absence of signs and symptoms suggestive of focal neurological deficits) despite conservative treatments, including activity modification, home exercise, protective weight bearing, and/or analgesics (for example, acetaminophen or non-steroidal anti-inflammatory drugs [NSAIDs]).

4. Positive response to dual diagnostic medial branch blocks (defined as a decrease in numeric pain scores of at least 80% for a min of 3 hours for bupivacaine and minimum of 2 hours for lidocaine) using 0.5mL or less of 0.5% bupivacaine and 2% lidocaine, on respective encounters on separate days, at each of the appropriate medial branches.

5. Usual/Average Pain = 6 on an 11-point NRS scale.

6. Analgesics including membrane stabilizers such as Neurontin (gabapentin) and antidepressants for pain, such as Cymbalta (duloxetine), must be clinically stable (defined as stable dosage for = 6 weeks prior to the screening visit) and shall not change during the study without approval of the investigator.

7. Agree to see one physician (study physician) for back pain during the study period.

8. Subjects of child bearing potential must be willing to utilize double barrier contraceptive method for duration of participation.

9. Willingness to comply with the requirements of this protocol for the full duration of the study.

Exclusion Criteria:

1. Evidence of inflammatory arthritis (example, rheumatoid arthritis) or other systemic condition (example; gout, fibromyalgia, MS, Lupus, etc.) that could cause pain.

2. Focal neurologic signs or symptoms.

3. Spinal pathology that may impede recovery such as spina bifida occulta, grade II or higher spondylolisthesis at an affected joint or adjacent level, or significant lumbar scoliosis (sagittal vertical axis angle >5 degrees or Cobb Angle >10 degrees).

4. Suspected mechanical instability based on flexion/extension and/or films at the proposed treatment levels

5. History of prior lumbar fusion or previous lumbar back surgery at the intended treatment levels.

6. Progressive motor deficit, and/or clinical signs of cauda equina or polyradiculopathy.

7. Radiologic evidence of a symptomatic herniated disc or nerve root impingement.

8. Symptomatic moderate or severe foramina or central canal stenosis demonstrating radicular symptoms or neurogenic claudication.

9. Evidence of neuropathic pain affecting the lower back.

10. Intra-articular steroid injection at target levels within 90 days from randomization.

11. Platelet rich plasma (PRP) or stem cells at target levels within 180 days from randomization.

12. Prior lumbar radiofrequency neurotomy of the L3/L4, L4/L5 medial branches and/or L5/S1dorsal ramus.

13. Body mass index (BMI) > 40 kg/m2

14. Extremely thin patients and those with minimal subcutaneous tissue thickness that would not accommodate a radiofrequency lesion of up to 14 mm in diameter to limit the risk of skin burns.

15. Active joint infection or systemic or localized infection at needle entry sites (subject may be considered for inclusion once infection is resolved).

16. Pending or active compensation claim, litigation, or disability remuneration (e.g. disability, worker's compensation, auto injury in litigation or pending litigation).

17. Pregnant, nursing or intent of becoming pregnant during the study period

18. Chronic pain associated with significant psychosocial dysfunction.

19. Poorly controlled severe psychiatric illness or ongoing psychological barriers to recovery, as determined by the investigator.

20. Allergies to any of the medications to be used during the procedures

21. History of uncontrolled coagulopathy, ongoing coagulation treatment that cannot be safely interrupted for procedure, or unexplained or uncontrollable bleeding that is uncorrectable.

22. Identifiable anatomical variability that would materially alter the procedure as described in the protocol.

23. Within the preceding 2 years, subject has suffered from active narcotic addiction, substance, or alcohol abuse.

24. Current prescribed opioid medications greater than 50 morphine equivalent daily opioid dose.

25. Uncontrolled immunosuppression (e.g. AIDS, cancer, diabetes, etc.).

26. Subject currently implanted with pacemaker, stimulator or defibrillator.

27. Participating in another clinical trial/investigation which included therapeutic treatment within 30 days prior to signing informed consent.

28. Subject unwilling or unable to comply with follow up schedule, protocol requirements or procedures.

Related Conditions & MeSH terms

• Back Pain
• Chronic Low-back Pain
• Low Back Pain

Intervention

Device:
• Cooled Radiofrequency
Delivery of energy to ablate sensory nerves via cooled radiofrequency probe
• Conventional Radiofrequency
Delivery of energy to ablate sensory nerves via standard or conventional radiofrequency probe

Locations

Country	Name	City	State
United States	University Orthopedics Center	Altoona	Pennsylvania
United States	Millennium Pain Center	Bloomington	Illinois
United States	The Spine and Nerve Centers of St. Francis Hosptial	Charleston	West Virginia
United States	Ochsner Baptist Medical Center	New Orleans	Louisiana
United States	University of Utah	Salt Lake City	Utah
United States	Pain Diagnostics and Interventional Care	Sewickley	Pennsylvania
United States	Premier Pain Centers	Shrewsbury	New Jersey
United States	University Orthopedics Center	State College	Pennsylvania
United States	International Spine & Pain Performance Center	Washington	District of Columbia
United States	The Center for Clinical Research	Winston-Salem	North Carolina

Sponsors (1)

Lead Sponsor	Collaborator
Avanos Medical

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	The proportion of subjects whose back pain is reduced by = 50 percent based on the NRS scale at 12 Months	The NRS is an 11-point scale (0 points to 10 points), where 0 points equals "no pain" and 10 points equals "worst pain". There are no sub-scales.	12 months
Other	Proportion of subjects experiencing adverse events through 12 months		12 months
Other	The mean change in SF-36 Physical Functioning (PF) score from baseline to the 12-month visit	Short Form 36-PF - score range = 0 - 100. "0" corresponds to "greatest disability" and "100" indicates "no disability". The means of these scores and their respective standard deviations are reported for each study group	12 months
Other	The mean change in Oswestry Disability Index (ODI) score from baseline to the 12-month visit	ODI - score range = 0 - 100. "0" corresponds to "no disability" and "100" indicates the "maximum disability possible". The means of these scores and their respective standard deviations are reported for each study group	12 months
Other	The measured Global Perceived Effect scale at the 12-month visit	The Global Perceived Effect is a 7-point scale: 1 point = "worst ever", 2 points = "much worse", 3 points = "worse", 4 points = "not improved but not worse", 5 points = "improved", 6 points = "much improved", 7 points = "best ever". There are no sub-scales.	12 months
Other	The mean change in EQ-5D-5L score from baseline to the 12-month visit	This outcome instrument is composed two components. The first component consists of five sub-scales containing five questions each. The point range for each sub-scale is from 1 to 5, with "1" indicating the best study subject condition and "5" indicating the worst study subject condition. Thus, the minimum and maximum scores per sub-scale are 1 and 5, respectively, and such scores for the entire instrument are 5 (best study subject condition) and 25 (worst study subject condition). The sub-scale topics are: Mobility, Self-Care, Usual Activities, Pain/Discomfort, and Anxiety/Depression. The second component, EQ-Visual Analog Scale (VAS), has a score range of 0 - 100. "0" corresponds to the "worst imaginable health state" and "100" indicates the "best imaginable health state". The means of these scores and their respective standard deviations are reported for each study group.	12 months
Other	The proportion of subjects requiring additional intervention for their back pain during the 12-month period		12 months
Primary	The proportion of subjects whose back pain is reduced by = 50 percent based on the NRS scale at 6 Months	The NRS is an 11-point scale (0 points to 10 points), where 0 points equals "no pain" and 10 points equals "worst pain". There are no sub-scales.	6 months
Primary	Proportion of subjects experiencing adverse events through 6-months		6 months
Secondary	The mean change in SF-36 Physical Functioning (PF) score from baseline to the 6-month visit	Short Form 36-PF - score range = 0 - 100. "0" corresponds to "greatest disability" and "100" indicates "no disability". The means of these scores and their respective standard deviations are reported for each study group	6 months
Secondary	The mean change in Oswestry Disability Index (ODI) score from baseline to the 6-month visit	ODI - score range = 0 - 100. "0" corresponds to "no disability" and "100" indicates the "maximum disability possible". The means of these scores and their respective standard deviations are reported for each study group	6 months
Secondary	The measured Global Perceived Effect scale at the 6-month visit	The Global Perceived Effect is a 7-point scale: 1 point = "worst ever", 2 points = "much worse", 3 points = "worse", 4 points = "not improved but not worse", 5 points = "improved", 6 points = "much improved", 7 points = "best ever". There are no sub-scales.	6 months
Secondary	The mean change in EQ-5D-5L score from baseline to the 6-month visit	This outcome instrument is composed two components. The first component consists of five sub-scales containing five questions each. The point range for each sub-scale is from 1 to 5, with "1" indicating the best study subject condition and "5" indicating the worst study subject condition. Thus, the minimum and maximum scores per sub-scale are 1 and 5, respectively, and such scores for the entire instrument are 5 (best study subject condition) and 25 (worst study subject condition). The sub-scale topics are: Mobility, Self-Care, Usual Activities, Pain/Discomfort, and Anxiety/Depression. The second component, EQ-Visual Analog Scale (VAS), has a score range of 0 - 100. "0" corresponds to the "worst imaginable health state" and "100" indicates the "best imaginable health state". The means of these scores and their respective standard deviations are reported for each study group.	6 months
Secondary	The proportion of subjects requiring additional intervention for their back pain during the 6-month period		6 months