Objective Evaluation of the Scratch Collapse Test With Dynamometer, a Prospective Multicenter Trial.
NCT ID: NCT05989373
Last Updated: 2024-05-29
Study Results
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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COMPLETED
NA
200 participants
INTERVENTIONAL
2023-09-01
2024-05-01
Brief Summary
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Diagnosis is usually based on an electromyogram (EMG), as well as symptomatology, etiology of typical symptoms and an evocative clinical examination. Provocative tests performed in consultation include the Tinel and Phalen sign for the carpal tunnel, and the Tinel and prolonged flexion sign for the ulnar nerve at the elbow.
The Scratch Collapse Test (SCT) has recently emerged as a new provocation test to help diagnose nerve compression in the upper limb.
This non-invasive, pain-free test looks for a reduction in the force of external rotation of the shoulder by applying resistance (the doctor's arm), before and then after a sensory stimulus by "scratching" the area of compression. Nevertheless, this test remains controversial and not based on objective measurements.
Our aim is therefore to assess shoulder external rotation force, and thus TBS, objectively with a dynamometer, before and after stimulation in cases of median nerve compression syndrome at the carpal tunnel and ulnar nerve compression syndrome at the elbow, when these are clinically and electromyographically proven.
This test has already been studied in the literature, but the results in terms of sensitivity and specificity are highly disparate. One study has already published negative results on the subject, with the limitation that the trial was monocentric.
Through this multicenter study, principal investigator wish to highlight the very probable subjectivity of the SCT when it is performed. As the resistance is applied by the physician's arm, the investigator cannot determine the force applied against the patient, unlike with a measurement object. The principal investigator expects this study to refute the notion that external shoulder rotation force decreases after trigger zone stimulation in cases of proven nerve compression syndrome.
The results of this study will thus make it possible to discontinue the use of this technique if it does not help in the diagnosis of compression.
The literature shows a lack of prospective, objective studies involving a large number of patients.
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Detailed Description
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Conditions
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Study Design
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NA
SINGLE_GROUP
DIAGNOSTIC
NONE
Study Groups
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nerve stimulation
The test in currently used to search for a nerv compression
Scratch collapse test
Scratch test performed by the surgeon but with a dynamometer
Interventions
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Scratch collapse test
Scratch test performed by the surgeon but with a dynamometer
Eligibility Criteria
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Inclusion Criteria
* Patient who has received informed information about the study
* Patient of legal age
* Patient with ulnar nerve or carpal tunnel compression confirmed by EMG during preoperative consultation
Exclusion Criteria
* Any history that may affect arm sensitivity
* Infra-electromyographic nerve compression syndrome (pure ulnar nerve instability)
18 Years
110 Years
ALL
No
Sponsors
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Clinique Saint Jean, France
OTHER
Responsible Party
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Benjamin DEGEORGE
Principal investigator
Locations
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Clinique St Jean sud de france
Saint-Jean-de-Védas, , France
Countries
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Other Identifiers
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2022-A01972-41
Identifier Type: -
Identifier Source: org_study_id
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