Optimizing Rehabilitation for Phantom Limb Pain Using Mirror Therapy and Transcranial Direct Current Stimulation (tDCS)
NCT ID: NCT02487966
Last Updated: 2025-09-25
Study Results
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View full resultsBasic Information
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ACTIVE_NOT_RECRUITING
NA
132 participants
INTERVENTIONAL
2015-07-31
2026-12-21
Brief Summary
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Detailed Description
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In this context, we hypothesize that novel treatments of PLP need to target specific neural networks associated with this maladaptive plasticity. Transcranial direct current stimulation (tDCS,Soterix ©) is a powerful and non-invasive technique of brain stimulation that is known to significantly modulate plasticity and alleviate chronic pain in various syndromes. device for this trial. This study usiGiven tDCS underlying neural mechanisms, it is critical to use a multimodal approach to treatment - using both tDCS and behavioral therapy simultaneously. In this case, an ideal therapy is mirror therapy (MT).
Recently, we showed that anodal tDCS can induce a selective short-lasting relief from PLP, and repeated applications of anodal tDCS induces long-lasting analgesic effects. These preliminary results show that tDCS may be a promising rehabilitative tool for the management of chronic PLP. This neurorehabilitation technique is commonly used in PLP, and is designed to modulate cortical mechanisms of pain by performing movements using the unaffected limb in front of a mirror. We propose to carry out a mechanistic, factorial, randomized controlled trial to evaluate a novel rehabilitation approach combining tDCS and MT in PLP patients. We aim to compare the brain changes before and after treatment in order to study the mechanisms underlying PLP.
Conditions
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Study Design
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RANDOMIZED
FACTORIAL
TREATMENT
TRIPLE
Study Groups
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Active tDCS and Active Mirror Therapy
Subjects will receive 20 minutes of active tDCS, while receiving 15 minutes of active Mirror Therapy.
transcranial Direct Current Stimulation (tDCS): active (Soterix ©)
Subjects will undergo tDCS stimulation. For both active and sham stimulation, we will use electrodes of 35cm\^2, at an intensity of 2mA on the primary motor cortex contralateral to the amputated leg. For active tDCS, the subject will undergo stimulation for 20 minutes.
Mirror Therapy: active
Subjects will be asked to perform movements (15 minutes daily) using the unaffected limb while watching its mirrored reflection superimposed over the affected limb. During Mirror Therapy, subjects will be asked to consciously relate the movement observed in the mirror to their phantom limb and to keep their attention focused on the task. Instructions will be explained verbally, demonstrated by a therapist, and performed by the subject in front of the therapist.
Active tDCS and sham Mirror Therapy
Subjects will receive 20 minutes of active tDCS, while receiving 15 minutes of sham Mirror Therapy.
transcranial Direct Current Stimulation (tDCS): active (Soterix ©)
Subjects will undergo tDCS stimulation. For both active and sham stimulation, we will use electrodes of 35cm\^2, at an intensity of 2mA on the primary motor cortex contralateral to the amputated leg. For active tDCS, the subject will undergo stimulation for 20 minutes.
Mirror Therapy: Sham
Subjects will be asked to perform movements (15 minutes daily) using the unaffected limb while watching its mirrored reflection superimposed over the affected limb, only the mirror will be covered. During Mirror Therapy, subjects will be asked to consciously relate the movement observed in the mirror to their phantom limb and to keep their attention focused on the task. Instructions will be explained verbally, demonstrated by a therapist, and performed by the subject in front of the therapist. We will use the same all of these techniques as active Mirror Therapy only the mirror will be covered during all activities.
Sham tDCS and active Mirror Therapy
Subjects will receive 20 minutes of sham tDCS, while receiving 15 minutes of active Mirror Therapy.
Mirror Therapy: active
Subjects will be asked to perform movements (15 minutes daily) using the unaffected limb while watching its mirrored reflection superimposed over the affected limb. During Mirror Therapy, subjects will be asked to consciously relate the movement observed in the mirror to their phantom limb and to keep their attention focused on the task. Instructions will be explained verbally, demonstrated by a therapist, and performed by the subject in front of the therapist.
transcranial Direct Current Stimulation (tDCS): sham (Soterix ©)
Subjects will undergo tDCS stimulation. For both active and sham stimulation, we will use electrodes of 35cm\^2, at an intensity of 2mA on the primary motor cortex contralateral to the amputated leg. The subject will undergo stimulation for 20 minutes. This is the same parameters as the active one, except the current will be ramped up and then down again (for 30 seconds total) to simulate the feeling of active stimulation.
Sham tDCS and sham Mirrory Therapy
Subjects will receive 20 minutes of sham tDCS, while receiving 15 minutes of sham Mirror Therapy.
transcranial Direct Current Stimulation (tDCS): sham (Soterix ©)
Subjects will undergo tDCS stimulation. For both active and sham stimulation, we will use electrodes of 35cm\^2, at an intensity of 2mA on the primary motor cortex contralateral to the amputated leg. The subject will undergo stimulation for 20 minutes. This is the same parameters as the active one, except the current will be ramped up and then down again (for 30 seconds total) to simulate the feeling of active stimulation.
Mirror Therapy: Sham
Subjects will be asked to perform movements (15 minutes daily) using the unaffected limb while watching its mirrored reflection superimposed over the affected limb, only the mirror will be covered. During Mirror Therapy, subjects will be asked to consciously relate the movement observed in the mirror to their phantom limb and to keep their attention focused on the task. Instructions will be explained verbally, demonstrated by a therapist, and performed by the subject in front of the therapist. We will use the same all of these techniques as active Mirror Therapy only the mirror will be covered during all activities.
Interventions
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transcranial Direct Current Stimulation (tDCS): active (Soterix ©)
Subjects will undergo tDCS stimulation. For both active and sham stimulation, we will use electrodes of 35cm\^2, at an intensity of 2mA on the primary motor cortex contralateral to the amputated leg. For active tDCS, the subject will undergo stimulation for 20 minutes.
Mirror Therapy: active
Subjects will be asked to perform movements (15 minutes daily) using the unaffected limb while watching its mirrored reflection superimposed over the affected limb. During Mirror Therapy, subjects will be asked to consciously relate the movement observed in the mirror to their phantom limb and to keep their attention focused on the task. Instructions will be explained verbally, demonstrated by a therapist, and performed by the subject in front of the therapist.
transcranial Direct Current Stimulation (tDCS): sham (Soterix ©)
Subjects will undergo tDCS stimulation. For both active and sham stimulation, we will use electrodes of 35cm\^2, at an intensity of 2mA on the primary motor cortex contralateral to the amputated leg. The subject will undergo stimulation for 20 minutes. This is the same parameters as the active one, except the current will be ramped up and then down again (for 30 seconds total) to simulate the feeling of active stimulation.
Mirror Therapy: Sham
Subjects will be asked to perform movements (15 minutes daily) using the unaffected limb while watching its mirrored reflection superimposed over the affected limb, only the mirror will be covered. During Mirror Therapy, subjects will be asked to consciously relate the movement observed in the mirror to their phantom limb and to keep their attention focused on the task. Instructions will be explained verbally, demonstrated by a therapist, and performed by the subject in front of the therapist. We will use the same all of these techniques as active Mirror Therapy only the mirror will be covered during all activities.
Eligibility Criteria
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Inclusion Criteria
2. Subject is older than 18 years.
3. Unilateral lower limb amputation.
4. Traumatic amputation greater than 1 year ago.
5. Chronic PLP for at least 3 months previous to enrollment in the study, experienced regularly for at least once a week.
6. Average pain of at least 4 on a numeric rating scale in the previous week (NRS; ranging from 0 to 10).
7. If the subject is taking any medications, dosages must be stable for at least 2 weeks prior to the enrollment of the study.
Exclusion Criteria
2. History of alcohol or drug abuse within the past 6 months as self-reported.
3. Presence of the following contraindication to transcranial direct current stimulation and transcranial magnetic stimulation
* Ferromagnetic metal in the head (e.g., plates or pins, bullets, shrapnel)
* Implanted neck or head electronic medical devices (e.g., cochlear implants, vagus nerve stimulator)
4. History of chronic pain previous to the amputation.
5. Head injury resulting in loss of consciousness for at least 30 min or pos-traumatic amnesia for greater than 24 hours, as self-reported
6. Unstable medical conditions (e.g. uncontrolled diabetes, uncompensated cardiac issues, heart failure or chronic obstructive pulmonary disease).
7. Uncontrolled Epilepsy or prior seizures within the last 1 year.
8. Suffering from severe depression (as defined by a score of \>30 in the Beck Depression Inventory).\*
9. History of unexplained fainting spells or loss of consciousness as self-reported during the last 2 years.
10. History of neurosurgery, as self-reported.
11. Mirror Therapy in the previous 3 months
18 Years
ALL
No
Sponsors
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Massachusetts Eye and Ear Infirmary
OTHER
Spaulding Rehabilitation Hospital
OTHER
Responsible Party
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Felipe Fregni, MD, PhD, MPH
Principal Investigator
Principal Investigators
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Felipe Fregni, MD, PhD, MPH
Role: PRINCIPAL_INVESTIGATOR
Spaulding Rehabilitation Hospital
Locations
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Spaulding Rehabilitation Network Research Institute
Charlestown, Massachusetts, United States
IMREA HCFMUSP - Rede Lucy Montoro
São Paulo, , Brazil
Countries
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References
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Nitsche MA, Fricke K, Henschke U, Schlitterlau A, Liebetanz D, Lang N, Henning S, Tergau F, Paulus W. Pharmacological modulation of cortical excitability shifts induced by transcranial direct current stimulation in humans. J Physiol. 2003 Nov 15;553(Pt 1):293-301. doi: 10.1113/jphysiol.2003.049916. Epub 2003 Aug 29.
Nitsche MA, Liebetanz D, Antal A, Lang N, Tergau F, Paulus W. Modulation of cortical excitability by weak direct current stimulation--technical, safety and functional aspects. Suppl Clin Neurophysiol. 2003;56:255-76. doi: 10.1016/s1567-424x(09)70230-2. No abstract available.
Priori A. Brain polarization in humans: a reappraisal of an old tool for prolonged non-invasive modulation of brain excitability. Clin Neurophysiol. 2003 Apr;114(4):589-95. doi: 10.1016/s1388-2457(02)00437-6.
Nitsche MA, Liebetanz D, Lang N, Antal A, Tergau F, Paulus W. Safety criteria for transcranial direct current stimulation (tDCS) in humans. Clin Neurophysiol. 2003 Nov;114(11):2220-2; author reply 2222-3. doi: 10.1016/s1388-2457(03)00235-9. No abstract available.
Nitsche MA, Cohen LG, Wassermann EM, Priori A, Lang N, Antal A, Paulus W, Hummel F, Boggio PS, Fregni F, Pascual-Leone A. Transcranial direct current stimulation: State of the art 2008. Brain Stimul. 2008 Jul;1(3):206-23. doi: 10.1016/j.brs.2008.06.004. Epub 2008 Jul 1.
Nitsche MA, Jaussi W, Liebetanz D, Lang N, Tergau F, Paulus W. Consolidation of human motor cortical neuroplasticity by D-cycloserine. Neuropsychopharmacology. 2004 Aug;29(8):1573-8. doi: 10.1038/sj.npp.1300517.
Schley MT, Wilms P, Toepfner S, Schaller HP, Schmelz M, Konrad CJ, Birbaumer N. Painful and nonpainful phantom and stump sensations in acute traumatic amputees. J Trauma. 2008 Oct;65(4):858-64. doi: 10.1097/TA.0b013e31812eed9e.
Fregni F, Gimenes R, Valle AC, Ferreira MJ, Rocha RR, Natalle L, Bravo R, Rigonatti SP, Freedman SD, Nitsche MA, Pascual-Leone A, Boggio PS. A randomized, sham-controlled, proof of principle study of transcranial direct current stimulation for the treatment of pain in fibromyalgia. Arthritis Rheum. 2006 Dec;54(12):3988-98. doi: 10.1002/art.22195.
CREUTZFELDT OD, FROMM GH, KAPP H. Influence of transcortical d-c currents on cortical neuronal activity. Exp Neurol. 1962 Jun;5:436-52. doi: 10.1016/0014-4886(62)90056-0. No abstract available.
Wassermann EM. Risk and safety of repetitive transcranial magnetic stimulation: report and suggested guidelines from the International Workshop on the Safety of Repetitive Transcranial Magnetic Stimulation, June 5-7, 1996. Electroencephalogr Clin Neurophysiol. 1998 Jan;108(1):1-16. doi: 10.1016/s0168-5597(97)00096-8.
Pinto CB, Saleh Velez FG, Bolognini N, Crandell D, Merabet LB, Fregni F. Optimizing Rehabilitation for Phantom Limb Pain Using Mirror Therapy and Transcranial Direct Current Stimulation: A Randomized, Double-Blind Clinical Trial Study Protocol. JMIR Res Protoc. 2016 Jul 6;5(3):e138. doi: 10.2196/resprot.5645.
Provided Documents
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Document Type: Study Protocol and Statistical Analysis Plan
Other Identifiers
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2015P001065
Identifier Type: -
Identifier Source: org_study_id
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