Multiple Sclerosis Clinical Trial
Official title:
Quantitation of McArdle's Sign and Evaluation of Specificity for Multiple Sclerosis
Verified date | August 2017 |
Source | Mayo Clinic |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
The study is designed to quantitate McArdle's sign, an increase in measurable weakness with neck flexion described in patients with multiple sclerosis, and to determine whether it is or is not specific for multiple sclerosis.
Status | Completed |
Enrollment | 125 |
Est. completion date | June 30, 2017 |
Est. primary completion date | June 30, 2017 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Myelopathy of any cause with finger extension weakness - Patients with peripheral neuropathy with finger extension weakness - Healthy controls Exclusion Criteria: - Pregnant subjects. |
Country | Name | City | State |
---|---|---|---|
United States | Mayo Clinic | Rochester | Minnesota |
Lead Sponsor | Collaborator |
---|---|
Mayo Clinic |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Difference in quantitative measure of strength between extended positions of the neck and fully flexed position of the neck (McArdle's sign) | Comparison of means and medians of the difference in strength in the fully extended and fully flexed positions ("McArdle's sign") measured using a torque measurement device between multiple sclerosis versus other myelopathy and between multiple sclerosis and normal controls; measurements are done in 5 successive trials of extension and flexion and the mean percentage difference between extension and flexion of the last 4 trials is averaged to calculated the McArdle's sign; the goal is to determine whether there is a specific level of McArdle sign that is diagnostic for MS using receiver operator curve method. | through study completion, an average of 1 year | |
Secondary | Relative sensitivity of clinical versus instrument-based detection of McArdle's sign. | Compare the clinical detection of the sign by the referring clinician and technician compared to the device-determined McArdle's sign | through study completion, an average of 1 year |
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