Mayo Clinic
Jacksonville, Florida, 32224, United States
Not Yet Recruiting
NCT Number: NCT07515911
Comparison of Ultrasound and Anatomic Landmark Techniques of the Ulnar and Posterior Tibial Nerves
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.
Not Yet Recruiting
Trial opening soon.
Get NotifiedKey information
Conditions
Age range
18 year and older
Sex eligibility
All sexes
Study type
Observational
Primary location
About this study
Placement of stimulating electrodes over the ulnar nerve is important for proper delivery of current leading to stimulation of intrinsic hand muscles. Accuracy may be improved with a better description of the precise location of the ulnar nerve. There may be a simple fraction of the wrist width that can be utilized to assist the busy practitioner with accurate placement of the stimulating electrodes over the ulnar nerve. It is expected that the ulnar groove, when easily identified, will be an accurate estimate (within 10% of total wrist width) of the ulnar nerve location.
Who can participate
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
Inclusion criteria
- English speaking
Exclusion criteria
- History of ulnar neuropathy or ulnar nerve or wrist surgery (i.e. carpal tunnel)
- Upper extremity edema
Treatment and study plan
Hand measurements
OtherUlnar 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
Foot/ankle measurements
OtherPosterior 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
Primary outcomes
-
Wrist width
Time frame: Baseline
Width of wrist will be measured with calipers and reported in inches
-
Reliability of wrist width to locate ulnar nerve
Time frame: Baseline
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
Study contacts
Contact information is provided by the study sponsor or research team.
Sponsors and collaborators
Lead sponsor
Mayo Clinic
Other
Registry information
Important dates
- Study start
- 2026
- Primary completion
- 2027
- Study completion
- 2027
- First posted
- Apr 7, 2026
- Registry last updated
- Jul 13, 2026
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.