Non Invasive Neurostimulation Technology for the Treatment of Type I Complex Regional Pain Syndrome (CRPS I)

NCT ID: NCT05052736

Last Updated: 2025-08-28

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

42 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-03-28

Study Completion Date

2026-12-27

Brief Summary

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Complex Regional Pain Syndrome (CRPS) / Complex Regional Pain Syndrome (CRPS) is a chronic neurological disorder that affects the extremities and is characterized by disabling pain, swelling, vasomotor instability, sudomotor abnormality, and impaired motor function; the duration and clinical magnitude is greater than expected, being divided into three stages of progression over time: Stage I: acute (0-3 months); Stage II: dystrophic (3-9 months); Stage 3: atrophic (9-18 months).

The purpose of this study is to investigate the effect on complex pain syndrome using a conventional care protocol plus the application of non-invasive neuromodulation during compared to the effect of the same protocol plus placebo.

Detailed Description

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The design of this study is a randomised, triple blind clinical trial with placebo control.

The size of the sample will be 42 participants who come to referral hospitals. They will be randomized in two groups: control or experimental.

The variables of the study will be collected at three time points: before the intervention, during the intervention and at the end of the intervention.

The variables of the study will be collected at two time points: before the intervention and at the end of the intervention.

The statistical analysis will be an intention-to-treat analysis. For the main outcomes variables a two factor ANOVA will-be performed (intervention-time) with a post-hoc analysis with kruskal wallis correction correction. Statistical significance will be defined as p \<0.05

Conditions

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Type I Complex Regional Pain Syndrome

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Non-invasive Neuromodulation

Non-invasive Neuromodulation Intervention with microcurrents: application of 6 electrodes per extremity and an adhesive electrode at C7 level.

Group Type EXPERIMENTAL

Non-invasive Neuromodulation

Intervention Type DEVICE

The electrodes will be placed with the help of gloves and adapted socks for 1 hour, twice a week, until 20 intervention sessions are completed. In addition, depending on the session, an adhesive electrode will be placed at the level of C7.

Characteristics of microcurrents: pulsed monophasic rectangular wave with a pulse of 1.3 s and pause of 300 ms, voltage 3 millivolt and intensity 0.5 μA.

Placebo Non-invasive Neuromodulation

Intervention with microcurrents: application of 6 electrodes per extremity and an adhesive electrode at C7.

Group Type PLACEBO_COMPARATOR

Non-invasive Neuromodulation

Intervention Type DEVICE

The electrodes will be placed with the help of gloves and adapted socks for 1 hour, twice a week, until 20 intervention sessions are completed. In addition, depending on the session, an adhesive electrode will be placed at the level of C7.

Characteristics of microcurrents: pulsed monophasic rectangular wave with a pulse of 1.3 s and pause of 300 ms, voltage 3 millivolt and intensity 0.5 μA.

Interventions

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Non-invasive Neuromodulation

The electrodes will be placed with the help of gloves and adapted socks for 1 hour, twice a week, until 20 intervention sessions are completed. In addition, depending on the session, an adhesive electrode will be placed at the level of C7.

Characteristics of microcurrents: pulsed monophasic rectangular wave with a pulse of 1.3 s and pause of 300 ms, voltage 3 millivolt and intensity 0.5 μA.

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Meet the Budapest criteria for the clinical diagnosis of CRPS type I.
* Age between 18 and 65.
* Period between 0 and 6 months after the onset of the clinical picture.
* Have signed the informed consent of their own free will.

Exclusion Criteria

* Have a diagnosis of CRPS type II.
* Present type I CRPS in more than one limb.
* Patients who have suffered a recurrence of CRPS type I.
* Pregnancy or plans for it during the study.
* Previous sympathectomy in the affected limb.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Las Palmas de Gran Canaria

OTHER

Sponsor Role lead

Responsible Party

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Aníbal Báez Suárez

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Aníbal Báez-Suárez, PhD

Role: PRINCIPAL_INVESTIGATOR

University of Las Palmas de Gran Canaria

Locations

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Aníbal Báez Suárez

Las Palmas de Gran Canaria, Palmas, Las, Spain

Site Status RECRUITING

Countries

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Spain

Central Contacts

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Aníbal Báez-Suárez, PhD

Role: CONTACT

+34 652077692

Aníbal Báez-Suárez, PhD

Role: CONTACT

+34652077692

Facility Contacts

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Aníbal Báez Suárez, PhD

Role: primary

652077692

References

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Sebastin SJ. Complex regional pain syndrome. Indian J Plast Surg. 2011 May;44(2):298-307. doi: 10.4103/0970-0358.85351.

Reference Type RESULT
PMID: 22022040 (View on PubMed)

Wasner G, Schattschneider J, Binder A, Baron R. Complex regional pain syndrome--diagnostic, mechanisms, CNS involvement and therapy. Spinal Cord. 2003 Feb;41(2):61-75. doi: 10.1038/sj.sc.3101404.

Reference Type RESULT
PMID: 12595868 (View on PubMed)

Todorova J, Dantchev N, Petrova G. Complex regional pain syndrome acceptance and the alternative denominations in the medical literature. Med Princ Pract. 2013;22(3):295-300. doi: 10.1159/000343905. Epub 2012 Nov 16.

Reference Type RESULT
PMID: 23171669 (View on PubMed)

Bruehl S. An update on the pathophysiology of complex regional pain syndrome. Anesthesiology. 2010 Sep;113(3):713-25. doi: 10.1097/ALN.0b013e3181e3db38.

Reference Type RESULT
PMID: 20693883 (View on PubMed)

Ratti C, Nordio A, Resmini G, Murena L. Post-traumatic complex regional pain syndrome: clinical features and epidemiology. Clin Cases Miner Bone Metab. 2015 Jan-Apr;12(Suppl 1):11-6. doi: 10.11138/ccmbm/2015.12.3s.011. Epub 2016 Apr 7.

Reference Type RESULT
PMID: 27134626 (View on PubMed)

Sandroni P, Benrud-Larson LM, McClelland RL, Low PA. Complex regional pain syndrome type I: incidence and prevalence in Olmsted county, a population-based study. Pain. 2003 May;103(1-2):199-207. doi: 10.1016/s0304-3959(03)00065-4.

Reference Type RESULT
PMID: 12749974 (View on PubMed)

Elsamadicy AA, Yang S, Sergesketter AR, Ashraf B, Charalambous L, Kemeny H, Ejikeme T, Ren X, Pagadala P, Parente B, Xie J, Lad SP. Prevalence and Cost Analysis of Complex Regional Pain Syndrome (CRPS): A Role for Neuromodulation. Neuromodulation. 2018 Jul;21(5):423-430. doi: 10.1111/ner.12691. Epub 2017 Sep 29.

Reference Type RESULT
PMID: 28961359 (View on PubMed)

Albazaz R, Wong YT, Homer-Vanniasinkam S. Complex regional pain syndrome: a review. Ann Vasc Surg. 2008 Mar;22(2):297-306. doi: 10.1016/j.avsg.2007.10.006.

Reference Type RESULT
PMID: 18346583 (View on PubMed)

Other Identifiers

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NESAMAZ

Identifier Type: -

Identifier Source: org_study_id

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