Retrospective Study of the Results of Cooled Radiofrequency for Genicular Nerves Neurotomy in 40 Consecutive Patients With Osteoarthritis of the Knee and Painful Knee Arthroplasty

Completed

• Conditions: Osteoarthritis, Knee

• Registration Number: NCT03343808
• Lead Sponsor: Hospital Son Espases

Brief Summary

Analyze the results of cooled radiofrequency in patients with chronic knee pain after one year of follow- up.

Detailed Description

The investigators performed a retrospective case-series reviewed of 40 patients who underwent cooled RF of genicular nerves. The investigators evaluated results of the survey of quality of life (SF36), knee society score (KSS) and the Visual Analogue Scale (VAS).

Study Timeline

• Study Start: 2015-01-08
• Primary Completion: 2016-05-26
• Study Completion: 2017-05-26
• Status Verified: 2017-11
• Study First Submitted: 2017-11-13
• Study First Submitted QC: 2017-11-13
• Study First Posted: 2017-11-17
• Last Update Submitted: 2017-11-17
• Last Update Posted: 2017-11-20

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

• Chronic knee pain (older than 3 months, with no response to physiotherapy, medication or hyaluronic acid infiltration) with a pain intensity according to VAS>7/10
• The radiological criteria were witness of OA with Kellgren-Lawrence index of 2 to 4.
• Painful TKA with no apparent cause and with a radiological image where a proper placement was observed

Exclusion Criteria

• Infection or lymphangitis of the member
• Acute knee pain
• Corticoids or hyaluronic acid infiltration with a high molecular weight prior to the surgery
• Pregnancy
• Severe neurological or psychiatric disorders
• Patients with pacemakers

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Treatment success was defined as the number of subjects whose knee pain is reduced by ± 50% based on the Visual Analogue Scale (VAS).	one year after the procedure	The VAS is a 11- point scale (0 points to 10 points), where 0 points equals "no pain" and 10 points equals the "worst pain".

Secondary Outcome Measures

Name	Time	Method
Short Form (36) Health Survey	one year after the procedure	The SF36 values eight parameters: physical function, social function, physical role, emotional role, mental health, vitality, pain and general health. Zero is the worst conceivable health and 100 the best.
Knee Society Score (KSS)	one year after the procedure	The KSS consists of two parts. KS measures pain, range of motion, stability and alignment. FS measures the distance able to walk, the difficulty in going up or down stairs and the need for walking aids. The result is rated as excellent (80-100), good (70-79), regular (60-69) and bad (\<60).