Sponsor study identifier
observational
40
1 country
1
Study Start
September 2, 2026
Actual (reported)Primary Completion
January 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
January 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
The purpose of this study is to determine whether placement of stimulating electrodes over the ulnar nerve is important for proper delivery of current leading to stimulation of intrinsic hand muscles.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
January 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
March 31, 2026
Actual (reported)April 7, 2026
Actual (reported)September 2, 2026
Actual (reported)January 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
January 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Wrist width
Width of wrist will be measured with calipers and reported in inches
Baseline
Reliability of wrist width to locate ulnar nerve
Total number of times that the ulnar nerve, as identified with ultrasound, falls between 5-15% of the wrist width distance as measured from the ulnar side of the wrist
Baseline
Employee volunteers will have hand measurements obtained to help identify location of ulnar nerve.
Ulnar right: * Width of wrist * Distance from radial side to middle of ulnar groove * Photo of ulnar groove o Grade ability to identify: easy, moderate-difficult, unable * Ultrasound measurements Ulnar left: * Width of wrist * Distance from radial side to middle of ulnar groove * Photo of ulnar groove o Grade ability to identify: easy, moderate-difficult, unable * Ultrasound measurements
Posterior tibial right: * Distance between prominence of medial malleolus and mid-Achilles tendon * Distance artery point of maximal pulsation to posterior border of medial malleolus * Distance artery point of maximal pulsation to medial border of Achilles tendon * Photo taken after palpating posterior tibial artery o Grade ability to identify: easy, moderate-difficult, unable * Ultrasound measurements Posterior tibial left: * Distance between prominence of medial malleolus and mid-Achilles tendon * Distance artery point of maximal pulsation to posterior border of medial malleolus * Distance artery point of maximal pulsation to medial border of Achilles tendon * Photo taken after palpating posterior tibial artery o Grade ability to identify: easy, moderate-difficult, unable * Ultrasound measurements
Mayo Clinic employees who meet inclusion/exclusion criteria
Mayo Clinic
Jacksonville, Florida, 32224, United States
J. Ross Renew, MD
Mayo Clinic
First Submitted
March 31, 2026
First Posted
April 7, 2026
Study Start
September 2, 2026
Actual (reported)Primary Completion
January 2027
EstimatedRegistry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Contact the study team to confirm eligibility.
Planned date reported by the registry; this milestone is not confirmed as achieved.
Study Completion
January 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
September 17, 2026
Record last verified: 2026-09
Download the complete ClinicalTrials.gov record imported by Syfrah, including fields not shown in this page. The registry may contain a newer revision.
Source: ClinicalTrials.gov.
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