Ulnar Nerve
Conditions
Brief summary
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.
Detailed description
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.
Interventions
OTHERHand measurements
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
OTHERFoot/ankle 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
Sponsors
Mayo Clinic
Study design
Observational model
OTHER
Time perspective
OTHER
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
• English speaking
Exclusion criteria
* History of ulnar neuropathy or ulnar nerve or wrist surgery (i.e. carpal tunnel) * Upper extremity edema
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Wrist width | Baseline | Width of wrist will be measured with calipers and reported in inches |
| Reliability of wrist width to locate ulnar nerve | 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 |
Countries
United States
Contacts
CONTACTAlly R. Sapin, MS
PRINCIPAL_INVESTIGATORJ. Ross Renew, MD
Mayo Clinic
Outcome results
None listed