NCT01747070

Brief Summary

The objective of this study is to evaluate the efficacy of transcranial direct current stimulation (tDCS) and electro acupuncture (EAC) compared to sham treatment in reducing pain, improving functional capacity and functioning of the neuro-immune-endocrine system in patients with chronic pain due to knee osteoarthritis.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
60

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Mar 2014

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 15, 2012

Completed
2 months until next milestone

First Posted

Study publicly available on registry

December 11, 2012

Completed
1.2 years until next milestone

Study Start

First participant enrolled

March 1, 2014

Completed
2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2016

Completed
9 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2016

Completed
Last Updated

August 22, 2017

Status Verified

August 1, 2017

Enrollment Period

2 years

First QC Date

October 15, 2012

Last Update Submit

August 17, 2017

Conditions

Keywords

Electro AcupunctureKnee OsteoarthritisChronic painCortical Excitability

Outcome Measures

Primary Outcomes (2)

  • Change in the intensity of daily pain.

    Measurement of outcomes by clinical parameters: Pain - The pain daily, in the course of treatment will be measured by the Visual Analog Scale, (VAS) 10 cm where zero corresponds to no pain and 10 cm maximum pain.

    The treatment will be 5 daily sessions.The pain level will be assessed before treatment, after each session and at the end of treatment.Totaling six days.

  • Change in the pressure pain threshold.

    Measurement of outcomes by parameters of pain threshold: Threshold Tolerance Test Algometry Pressure: the tolerance threshold pressure is measured by pressure algometer digital, with an area of 1 cm2 in area with muscle trigger point that triggers more pain. The maximum pressure to be applied will be 1400 kPa (Kilopascal) to avoid tissue damage. The patient will be instructed to indicate when the stimulus becomes unbearable and the value of tolerance threshold will be constituted by the average of three measurements.

    The pressure pain threshold will will be evaluated before and after 5 daily sessions of treatment.Totaling six days.

Secondary Outcomes (4)

  • State of physical and mental health.

    The state of physical and mental health will be assessed before and after treatment. Totaly five days.

  • Level of depressive symptoms .

    Depressive symptoms will be assessed before and after treatment. Totaly five days.

  • Daily sleep quality.

    Sleep quality will be evaluated daily, totaling five days of evaluation.

  • Change in the level of functionality.

    The functionality level will be evaluated before and after 5 daily sessions of treatment.Totaling six days.

Other Outcomes (1)

  • Cortical excitability:Motor threshold (MT), Motor evoked potential (MEP),silent period (SP), intracortical facilitation (ICF)and intracortical inhibition (ICI).

    The cortical excitability is evaluated before and after treatment with a transcranial magnetic stimulation (TMS) equipment.

Study Arms (4)

tDCS and EAC sham

ACTIVE COMPARATOR

Subjects will receive 05 sessions of tDCS. The tDCS consist of application of current of 2 mA, the anode being placed in the motor cortex (M1) and the cathode in the supraorbital region, for 30 minutes,using electrodes with saline solution. The sham DIMST consist of the use of rubber electrodes placed in the same places that active treatment. Will use the same electrical apparatus, but without pass of current to the electrodes. The unit will be in front of the patient on with their lights blinking.

Other: tDCS and EAC sham

tDCS sham and EAC sham

PLACEBO COMPARATOR

The subjects will receive 05 sessions of tDCS sham and EAC sham. The sham tDCS be performed in the same way as the active, although the Electro device is turned off 30 seconds after the beginning of treatment, the session will have the same duration of 30 minutes. The EAC sham consists of placement of rubber electrodes in the same areas of active stimulation (beside the spinous processes of L1 to S2, muscles vastus lateralis, rectus anterioris, vastus medialis, tibialis anterior, peroneus longus and insertion of the pes anserinus). The electrodes are connected to the same device electro, for 30 minutes, but without passage of electrical stimulation to the patient. The device is kept on and in front of the patient, with the lights blinking.

Other: tDCS sham and EAC sham

tDCS sham and EAC

ACTIVE COMPARATOR

Subjects will receive 05 sessions of tDCS sham and EAC.The sham tDCS be performed in the same way as the active, although the Electro device is turned off 30 seconds after the beginning of treatment, the session will have the same duration of 30 minutes. The EAC consist of electrical stimulation with a frequency of 2 Hz for 30 min. The needles are placed beside the spinous processes of L1 to S2, with a depth of 3 cm and in the muscles: vastus lateralis, rectus anterioris, vastus medialis, tibialis anterior, peroneus longus and insertion of the pes anserinus.

Other: tDCS sham and EAC

tDCS and EAC

EXPERIMENTAL

Subjects will receive 05 sessions of transcranial direct current stimulation(tDCS) and electroacupuncture(EAC). The tDCS consist of application of current of 2 mA, the anode being placed in the motor cortex (M1) and the cathode in the supraorbital region, for 30 minutes,using electrodes with saline. The electroacupuncture consist of electrical stimulation with a frequency of 2 Hz for 30 min. The needles are placed beside the spinous processes of L1 to S2, with a depth of 3 cm and in the muscles: vastus lateralis, rectus anterioris, vastus medialis, tibialis anterior, peroneus longus and insertion of the pes anserinus.

Other: tDCS and EAC

Interventions

The tDCS apparatus is operated on battery power, will be used rubber electrodes soaked in saline solution. The anode is placed in M1 and the cathode in the supraorbital region.

Also known as: Transcranial direct current stimulation.
tDCS and EAC sham

For the EAC sham we will use rubber electrodes. They will be applied in the same areas of active EAC. They are connected to the same electroacupuncture device, but without current passing for the patient. All subjects receive one 30min session.

Also known as: DIMST: deep intramuscular stimulation.
tDCS sham and EAC sham

For the sham tDCS we will use the same apparatus in the same location, but the current is stopped after 30 seconds.

Also known as: DIMST
tDCS sham and EAC

For the acupuncture we will use needles with guide tubes that are 40 mm in length and 0.25 mm in diameter. The needling will be applied using an electro acupuncture device in the dermatomes, myotome, or sclerotome corresponding to the nerve roots involved in the knee (L1, L2, L3, L4, L5, S1, and S2). All patients received one 30min session using a frequency of 2 Hz.

Also known as: DIMST
tDCS and EAC

Eligibility Criteria

Age18 Years+
Sexfemale
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Women with over 18 years old,with chronic pain because of primary osteoarthritis of the knee.
  • Pain stable for at least three months. Score greater than or equal to 3 cm (0 cm = "no pain" and "worst possible pain" = 10cm) on Visual Analog Scale (VAS) for pain perception at baseline.
  • No contraindications to electroacupuncture, transcranial direct current stimulation or transcranial magnetic stimulation.

You may not qualify if:

  • Presence of neurological or rheumatic comorbidity.
  • Pregnancy.
  • Already having been treated with acupuncture.
  • Having performed with corticosteroid infiltration in the last six weeks or are using this.
  • Having performed with hyaluronic acid infiltration in the last year.
  • Previous surgery on the limb to be treated or have surgical program for the next 6 months.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Hospital de Clínicas de Porto Alegre

Porto Alegre, Rio Grande do Sul, 90035903, Brazil

Location

Related Publications (12)

  • Lima MC, Fregni F. Motor cortex stimulation for chronic pain: systematic review and meta-analysis of the literature. Neurology. 2008 Jun 10;70(24):2329-37. doi: 10.1212/01.wnl.0000314649.38527.93.

    PMID: 18541887BACKGROUND
  • Lefaucheur JP, Drouot X, Menard-Lefaucheur I, Keravel Y, Nguyen JP. Motor cortex rTMS restores defective intracortical inhibition in chronic neuropathic pain. Neurology. 2006 Nov 14;67(9):1568-74. doi: 10.1212/01.wnl.0000242731.10074.3c.

    PMID: 17101886BACKGROUND
  • Zaghi S, Thiele B, Pimentel D, Pimentel T, Fregni F. Assessment and treatment of pain with non-invasive cortical stimulation. Restor Neurol Neurosci. 2011;29(6):439-51. doi: 10.3233/RNN-2011-0615.

    PMID: 22124038BACKGROUND
  • Zunhammer M, Eichhammer P, Franz J, Hajak G, Busch V. Effects of acupuncture needle penetration on motor system excitability. Neurophysiol Clin. 2012 Jun;42(4):225-30. doi: 10.1016/j.neucli.2012.02.134. Epub 2012 Mar 6.

    PMID: 22632870BACKGROUND
  • Lo YL, Cui SL. Acupuncture and the modulation of cortical excitability. Neuroreport. 2003 Jul 1;14(9):1229-31. doi: 10.1097/00001756-200307010-00008.

    PMID: 12824765BACKGROUND
  • Imamura M, Imamura ST, Kaziyama HH, Targino RA, Hsing WT, de Souza LP, Cutait MM, Fregni F, Camanho GL. Impact of nervous system hyperalgesia on pain, disability, and quality of life in patients with knee osteoarthritis: a controlled analysis. Arthritis Rheum. 2008 Oct 15;59(10):1424-31. doi: 10.1002/art.24120.

    PMID: 18821657BACKGROUND
  • Srbely JZ, Dickey JP, Lee D, Lowerison M. Dry needle stimulation of myofascial trigger points evokes segmental anti-nociceptive effects. J Rehabil Med. 2010 May;42(5):463-8. doi: 10.2340/16501977-0535.

    PMID: 20544158BACKGROUND
  • Schwenkreis P, Scherens A, Ronnau AK, Hoffken O, Tegenthoff M, Maier C. Cortical disinhibition occurs in chronic neuropathic, but not in chronic nociceptive pain. BMC Neurosci. 2010 Jun 11;11:73. doi: 10.1186/1471-2202-11-73.

    PMID: 20540759BACKGROUND
  • Laste G, Caumo W, Adachi LN, Rozisky JR, de Macedo IC, Filho PR, Partata WA, Fregni F, Torres IL. After-effects of consecutive sessions of transcranial direct current stimulation (tDCS) in a rat model of chronic inflammation. Exp Brain Res. 2012 Aug;221(1):75-83. doi: 10.1007/s00221-012-3149-x. Epub 2012 Jul 3.

    PMID: 22752510BACKGROUND
  • Le Bars D, Dickenson AH, Besson JM. Diffuse noxious inhibitory controls (DNIC). II. Lack of effect on non-convergent neurones, supraspinal involvement and theoretical implications. Pain. 1979 Jun;6(3):305-327. doi: 10.1016/0304-3959(79)90050-2.

    PMID: 460936BACKGROUND
  • Boggio PS, Amancio EJ, Correa CF, Cecilio S, Valasek C, Bajwa Z, Freedman SD, Pascual-Leone A, Edwards DJ, Fregni F. Transcranial DC stimulation coupled with TENS for the treatment of chronic pain: a preliminary study. Clin J Pain. 2009 Oct;25(8):691-5. doi: 10.1097/AJP.0b013e3181af1414.

    PMID: 19920718BACKGROUND
  • da Graca-Tarrago M, Lech M, Angoleri LDM, Santos DS, Deitos A, Brietzke AP, Torres IL, Fregni F, Caumo W. Intramuscular electrical stimulus potentiates motor cortex modulation effects on pain and descending inhibitory systems in knee osteoarthritis: a randomized, factorial, sham-controlled study. J Pain Res. 2019 Jan 3;12:209-221. doi: 10.2147/JPR.S181019. eCollection 2019.

MeSH Terms

Conditions

Osteoarthritis, KneeChronic Pain

Interventions

Transcranial Direct Current StimulationD-4-chloro-17 beta-hydroxy-3-oxo-17 alpha-methylandrosta-1,4-diene

Condition Hierarchy (Ancestors)

OsteoarthritisArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic DiseasesPainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Electric Stimulation TherapyTherapeuticsConvulsive TherapyPsychiatric Somatic TherapiesBehavioral Disciplines and ActivitiesElectroshockPsychological Techniques

Study Officials

  • Wolnei Caumo, PhD

    Federal University of Rio Grande do Sul

    STUDY DIRECTOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 15, 2012

First Posted

December 11, 2012

Study Start

March 1, 2014

Primary Completion

March 1, 2016

Study Completion

December 1, 2016

Last Updated

August 22, 2017

Record last verified: 2017-08

Locations