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Neural Bases of Phantom Pain After Amputation

Experimental Study of the Neural Bases of Phantom Pain After Amputation and Their Modification by Proprioceptive Training: MRI Study of the Brain and Spinal Cord

Status
Not yet recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05545358
Acronym
Phantom limb
Enrollment
75
Registered
2022-09-19
Start date
2022-10-31
Completion date
2026-10-31
Last updated
2022-09-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Phantom Pain

Keywords

fMRI, spinal fMRI

Brief summary

The amputation of a limb results in chronic pain associated with the lost limb in the majority of patients, which persists over time. Despite a large number of studies conducted in an attempt to elucidate the neural basis of phantom pain, these are still not elucidated and current treatments often fail to relieve patients' pain.

Interventions

OTHERQuestionnaires

Short-Form McGill Pain Questionnaire (SF-MPQ) Pain Disability Index (PDI) Prosthesis Evaluation Questionnaire (PEQ) Psychological Inflexibility to Pain Scale (PIPS) Chronic Pain Acceptance Questionnaire (CPAQ) Cognitive Difficulties Scale (CDS) Amputee Body Image Scale (ABIS) Trinity Amputation and Prosthesis Experience Scales (TAPES) Pain Catastrophizing Scale (PCS) Hospital Anxiety and Depression Scale (HAD) Credibility/Expectancy Questionnaire (CEQ) Short-Form Edinburgh Handedness Inventory (SF-EHI) Patient's Global Impression of Change (PGIC)

DEVICEBrain and Spinal Cord functional Magnetic Resonance Imaging

Brain and Spinal Cord functional Magnetic Resonance Imaging

Proprioceptive muscular training via a mechanical vibration of low amplitude and frequency between 60 and 80 Hz applied to the tendons.

Sponsors

Direction Centrale du Service de Santé des Armées
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years

Inclusion criteria

* Between 18 and 65 years old * For the amputees with phantom pain group: patients who have been amputated for more than 2 years and have chronic phantom pain * For the amputees without phantom pain group: patients who have been amputated for more than 2 years and do not have chronic phantom pain * For the healthy participants group: healthy participants with no neurological history

Exclusion criteria

* Clinically significant pathology (gastrointestinal, renal, hepatic, endocrine, cardiovascular or respiratory) * Progressive psychiatric or neurological pathology * On psychotropic medication * Pregnant or nursing woman * Inadequate level of French language

Design outcomes

Primary

MeasureTime frameDescription
Change in brain activity, measured through fMRI, following proprioceptive trainingUp to 3 monthsBrain activity (BOLD hemodynamic response) will be measured via fMRI before and after proprioceptive training sessions.
Change in spinal cord activity, measured through spinal fMRI, following proprioceptive trainingUp to 3 monthsSpinal cord activity (BOLD hemodynamic response) will be measured via spinal fMRI before and after proprioceptive training sessions.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026