Saphenous Nerve Radiofrequency for Knee Osteoarthritis Trial (SAPHENERO)

July 7, 2016 updated by: Hermann dos Santos Fernandes, University of Sao Paulo General Hospital

Comparative Study of Neurotomy by Radiofrequency of Genicular Nerves, Guided by Fluoroscopy, and Neurotomy by Radiofrequency of Saphenous Nerve, Guided by Ultrasound, for the Treatment of Chronic Knee Pain in Patients With Osteoarthritis .

This project is one of four components of a thematic project that aims to evaluate the use of ultrasound in regional and infiltration blocks, called "Use of ultrasound in regional blocks and infiltration for the treatment of acute and chronic pain".

It aims to evaluate quantitatively and qualitatively the knee pain control in patients with osteoarthritis after neurotomy by saphenous nerve radiofrequency guided by ultrasound , compared to neurotomy by radiofrequency of genicular nerves guided by fluoroscopy .

Differences between total consumption of analgesics, side effects of medications , impact on quality of life and functional capacity in patients undergoing saphenous nerve neurotomy by radiofrequency guided by ultrasound compared to neurotomy by radiofrequency of genicular nerves guided by fluoroscopy, will also be evaluated.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

BACKGROUND: Osteoarthritis of the knees is currently a major public health problem, with patients suffering from pain and functional limitation. Depending on the severity of the impairment, the definitive treatment is surgical, but the old ages often associated and morbidities present in these patients some times limit such conduct. More effective treatments for pain control are necessary.

OBJECTIVES: To evaluate quantitative and qualitative pain control in patients with osteoarthritis in knees after neurotomy of saphenous nerve by radiofrequency guided by ultrasound, compared to neurotomy by radiofrequency of genicular nerves guided by fluoroscopy.

METHODS: This was a prospective, randomized clinical study and blind to the evaluators. Will include 20 patients with knee osteoarthritis grade III or IV, refractory to medical treatment. A group will be submitted to neurotomy by radiofrequency of genicular nerves guided by fluoroscopy and the other group will receive neurotomy by radiofrequency of saphenous nerve, guided by ultrasound. They will be assessed in pain intensity at rest and movement, functionality, satisfaction and adverse effects related to treatment. Patients will be evaluated 15 days, 1 month, 3, 6 and 12 months after the procedure.

Study Type

Interventional

Enrollment (Anticipated)

20

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Brazil
      • São Paulo, Brazil, 05403000
        • Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Will be included patients older than 18 years, who have moderate to strong chronic pain in knee on most of the days days for at least 3 months, with osteoarthritis of the knee documented by graded radiologically at 3 to 4 in Kellgren-Lawrence rating, refractory to medical treatment (physical therapy, oral analgesics, intra-articular injections of hyaluronic acid or corticosteroids).

Exclusion Criteria:

  • The exclusion criteria are: acute knee pain, prior surgery on the knee, another connective tissue disease affecting the knee, psychiatric or neurological disorders, intra-articular injection of hyaluronic acid or corticosteroid for less than 3 months, pain related to nerve sciatic, use of anticoagulants and pacemaker.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Sham Comparator: Genicular nerves
Neurotomy by radiofrequency of genicular nerves knee guided by fluoroscopy
Procedure: Genicular nerves
Genicular nerves neurotomy by radiofrequency, guided by fluoroscopy
Active Comparator: Saphenous Nerve
Neurotomy of saphenous nerve by radiofrequency on the distal third of the thigh, guided by ultrasound
Procedure: Saphenous Nerve
Saphenous nerve neurotomy by radiofrequency, guided by ultrasound.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pain scores
Time Frame: 90 days
Number verbal scale
90 days

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Opioids consumption
Time Frame: 90 days
Morphine oral equivalent dose needed
90 days
Side effects
Time Frame: 90 days
Nausea, vomiting, sedation
90 days
Functional capacity
Time Frame: 90 days
WOMAC score
90 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Sao Paulo General Hospital

Investigators

  • Principal Investigator: Hazem A Ashmawi, Ph.D, Head of the Pain Management Unit
  • Principal Investigator: Joaquim E Vieira, Ph.D, Associated Professor of Anesthesiology Department

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2016

Primary Completion (Anticipated)

September 1, 2017

Study Completion (Anticipated)

March 1, 2018

Study Registration Dates

First Submitted

July 5, 2016

First Submitted That Met QC Criteria

July 7, 2016

First Posted (Estimate)

July 11, 2016

Study Record Updates

Last Update Posted (Estimate)

July 11, 2016

Last Update Submitted That Met QC Criteria

July 7, 2016

Last Verified

July 1, 2016

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CAAE: 55153516.0.0000.0068

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

Study Data/Documents

  1. Study Protocol
  2. Informed Consent Form

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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