Frequency Parameter Used to Apply Ultrasound-guided Neuromodulation Percutaneous (Parameters NMP)

How we Apply Ultrasound-guided Neuromodulation in Lower Back Pain Sufferers

In the daily clinical practice, one of the most frequent reasons for consultation physiotherapists is low back pain (LBP). Regardless of the origin of the problem, the approach from physiotherapy contemplates the reduction of pain through different procedures, including neuromodulation.

In the field of Physiotherapy, ultrasound-guided Percutaneous Neuromodulation (PNM) is defined as the application through a needle with ultrasound guidance of an electrical current at low or medium frequency, seeking a sensitive and / or motor response of a peripheral nerve in some point of its trajectory, or of a muscle in a motor point, with a therapeutic objective. The objective of the study is to analyze that the effect of PNM on the sciatic nerve produces statistically significant changes in pain, joint range and functionality in patients with chronic LBP. Forty subjects will be recruited, which will be divided into 2 groups: group 1 to which PNM will be applied to the sciatic nerve at 250 microseconds, 3 Hz) during 90 seconds; group 2 to which PNM will be applied to the sciatic nerve in at 250 microseconds, 10 Hz during 90 second. The PNM intervention with NMP will consist in the single application of an asymmetric rectangular biphasic current.

Study Overview

• Status: Completed
• Conditions: Low Back Pain
• Intervention / Treatment: Other: NMP

• Study Type: Interventional
• Enrollment (Actual): 40
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Spain
  • Seville, Spain, 41009
    • University of Seville

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Diagnosis of Lower Back Pain
• Having no other therapy

Exclusion Criteria:

• Other pathology (discal hernia, injured limbs, neurological pathology)
• Belenophobia

Study Plan

How is the study designed?

Design Details

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

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: NMP 3 Hz; Participants received the percutaneous electrical stimulation intervention. Specifically, this consisted of the application of a square wave biphasic electrical current, with 3 Hz frequency and a 250µs pulse width, at the maximal tolerable intensity, to cause an tolerable muscle contraction. The application was 10 stimulations of 10 seconds, with 10 seconds at rest between stimulations. A trained physiotherapist performed the PNM intervention.	Other: NMP; Participants received the percutaneous electrical stimulation intervention. Specifically, this consisted of the application of a square wave biphasic electrical current, to cause a tolerable muscle contraction. The application was 10 stimulations of 10 seconds, with 10 seconds at rest between stimulations. A trained physiotherapist performed the PNM intervention.
Experimental: NMP 10 Hz; Participants received the percutaneous electrical stimulation intervention. Specifically, this consisted of the application of a square wave biphasic electrical current, with 10 Hz frequency and a 250µs pulse width, at the maximal tolerable intensity, to cause an tolerable muscle contraction. The application was 10 stimulations of 10 seconds, with 10 seconds at rest between stimulations. A trained physiotherapist performed the PNM intervention.	Other: NMP; Participants received the percutaneous electrical stimulation intervention. Specifically, this consisted of the application of a square wave biphasic electrical current, to cause a tolerable muscle contraction. The application was 10 stimulations of 10 seconds, with 10 seconds at rest between stimulations. A trained physiotherapist performed the PNM intervention.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Level of pain	Measured by Visual Analogue Scale (0, no pain; 100, max pain)	From baseline measurement up to 1 week
Owestry questionnaire	Lower back pain questionnaire. The final result is classified as minimal disability (0-20), moderate disability (21-40), severe disability (41-60), crippled (61-80) and bed-bound or exaggerating their symptoms (81-100).	From baseline measurement up to 1 week
Range of motion	Measured by goniometer. Hip flexion, external and internal rotation range of motion	From baseline measurement up to 1 week
Y Balance Test	Stability body	From baseline measurement up to 1 week
Strength	Measured by dynamometer. Hip flexion, abduction, external and internal rotation muscle strength	From baseline measurement up to 1 week

Collaborators and Investigators

• Sponsor: University of Seville

Study record dates

Study Major Dates

• Study Start (Actual): November 3, 2021
• Primary Completion (Actual): November 3, 2021
• Study Completion (Actual): November 1, 2023

Study Registration Dates

• First Submitted: October 23, 2021
• First Submitted That Met QC Criteria: October 23, 2021
• First Posted (Actual): November 4, 2021

Study Record Updates

• Last Update Posted (Actual): December 26, 2023
• Last Update Submitted That Met QC Criteria: December 22, 2023
• Last Verified: December 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pain; Neurologic Manifestations; Back Pain; Low Back Pain
• Other Study ID Numbers: NMP-Frequency

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No