The Complex Regional Pain Syndrome (CRPS) is a Chronic Pain Condition. This is a Preliminary Study to Explore and Test Clinical Hypothesis. They Suppose That CRPS Patients Have Impairment in Their Mental or Motor Imagery Abilities.

Study Overview
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Brief Summary
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Medical functional imagery seems to demonstrate that patients suffering from complex regional pain syndrome (CRPS) have cortical modifications that alter their motor (or mental) imagery capacities. Nowadays, the use of motor imagery exercises are used in conventional rehabilitation treatments. But, in clinical practice, no study has verified if patients with CRPS desmonstrate problems in their motor imagery capacities. The MIQ-RS (Motor Imagery Questionnaire - Revised Second) is a valid, reliable and translated into French questionnaire to measure patients' capacities to do mental imagery. In this study, we compare 3 groups of 50 patients : healthy patients, patients with CRPS and patients with musculoskeletal disorder without CRPS. Every patient will take the MIQ-RS for the right and left body side. We hypothesis that patients with CRPS have more deficit than the 2 others to realise motor imagery.

Official Title
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Pilot Study on the Assessment of Motor Imaging Skills in Patients With Complex Regional Pain Syndrome (CRPS)

Conditions
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Complex Regional Pain Syndromes, Musculoskeletal Pain Disorder, Healthy

Intervention / Treatment
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* Diagnostic Test: Motor imagery Questionnaire - Revised Second (MIQ-RS)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patient with French healthcare affiliation Adult patient (> 18 years old) Patient with bachelor degree minimum Patient practicing less than 150 minutes of moderate to intense physical activity per week Specific Inclusion Criteria for CRPS group : Patient followed in the Evaluation and Treatment pain center (University Hospital of Nimes) Patient with secondary CRPS due to a traumatism or a surgery Specific Inclusion Criteria for Musculoskeletal group : Patient with musculoskelettal disorder on a limb (upper or lower) Patient followed in the University Hospital of Nimes Non inclusion Criteria : Patient who participates in another category 1 research Patient in a exclusion period in another study Patient under legal protection, under guardianship or under curatorship Patient for whom it is impossible to give clear information. Pregnant, parturient or breastfeeding patient. Patient with amputation on one of his limb Patient with visual cecity Patient who has already practiced mental imagery Patient with neurological impairment Patient with chronic low back pain and fibromyalgia Specific non inclusion criteria for Musculoskeletal group and healthy group : -Patient with CRPS Specific non inclusion Criteria for CRPS group : Secondary CRPS to CVA (cerebrovascular accident) Patient receiving lymph node block treatment between the inclusion visit and the follow-up visit Specific non inclusion Criteria for Musculoskeletal Disorder group : Patient with secondary musculoskeletal disorder to a CVA Exclusion criteria : Questionnaire MIQ-RS not completed or non respect with the research protocol pathology discovered incompatible with the study criteria

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Screening
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: 3 groups with different healthcare conditions are compared in motor imagery capacities
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Healthy patients<br>Healthy patients take the MIQ-RS during about 40 minutes : about 20 minutes for the assessment of the right side and about 20 minutes for the left side | Diagnostic Test: Motor imagery Questionnaire - Revised Second (MIQ-RS)<br>* Patients fulfill a questionnaire measuring individuals capacities to realize mental imagery. For more facilities and less risk of bias, the MIQ-RS was written on an online version with questions recorded in audio format. No official cut-off exists but studies seem to prove that people with : a score less than 48/98 are unable to do motor imagery a score between 49 and 73/98 have disturbed motor imagery capacities a score more than 74/98 have normal motor imagery capacities.<br>|
| Other: Complex regional pain syndrome patients<br>Complex regional pain syndrome patients take the MIQ-RS during about 40 minutes : about 20 minutes for the assessment of the right side and about 20 minutes for the left side | Diagnostic Test: Motor imagery Questionnaire - Revised Second (MIQ-RS)<br>* Patients fulfill a questionnaire measuring individuals capacities to realize mental imagery. For more facilities and less risk of bias, the MIQ-RS was written on an online version with questions recorded in audio format. No official cut-off exists but studies seem to prove that people with : a score less than 48/98 are unable to do motor imagery a score between 49 and 73/98 have disturbed motor imagery capacities a score more than 74/98 have normal motor imagery capacities.<br>|
| Other: Musculoskelettal disorders patients<br>Musculoskelettal disorders patients take the MIQ-RS during about 40 minutes : about 20 minutes for the assessment of the right side and about 20 minutes for the left side | Diagnostic Test: Motor imagery Questionnaire - Revised Second (MIQ-RS)<br>* Patients fulfill a questionnaire measuring individuals capacities to realize mental imagery. For more facilities and less risk of bias, the MIQ-RS was written on an online version with questions recorded in audio format. No official cut-off exists but studies seem to prove that people with : a score less than 48/98 are unable to do motor imagery a score between 49 and 73/98 have disturbed motor imagery capacities a score more than 74/98 have normal motor imagery capacities.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Motor imagery capacities on the affected side for CRPS group and musculoskelettal disorder group. | Taking the MIQ-RS for 1 side, during about 20 minutes The questionnaire includes 14 questions : 7 for kinesthesic motor imagery and 7 for visual motor imagery For less bias, the questionnaire was recorded in audio for each of the 14 questions on an online assessment. No official cut-off exists but studies seem to prove that people with : a score less than 48/98 are unable to do motor imagery a score between 49 and 73/98 have disturbed motor imagery capacities a score more than 74/98 have normal motor imagery capacities. | Day 1 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Motor imagery capacities between affected side and unaffected side | Taking the MIQ-RS for 1 side, during about 20 minutes The questionnaire includes 14 questions : 7 for kinesthesic motor imagery and 7 for visual motor imagery For less bias, the questionnaire was recorded in audio for each of the 14 questions on an online assessment. No official cut-off exists but studies seem to prove that people with : a score less than 48/98 are unable to do motor imagery a score between 49 and 73/98 have disturbed motor imagery capacities a score more than 74/98 have normal motor imagery capacities. | Day 1 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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complex regional pain syndromes, motor imagery, mental imagery, MIQ-RS, Pilot study, comparison groups, CRPS