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Updated: Jul 18, 2025

Functional and Physiological Methods of Evaluating Median Nerve Regeneration in the Rat
Published on: April 18, 2020
[A Rare Cause for Median Nerve Irritation]
1Rappjmed, Rapperswil-Jona 2 Neurologen am Zürichsee, Sp.
Wearing a smartwatch too tightly, especially for continuous monitoring, may cause median nerve compression, leading to carpal tunnel syndrome symptoms. Adjusting watch tightness or removing it can alleviate these neurological issues.
Area of Science:
- Neurology
- Biomedical Engineering
- Wearable Technology
Background:
- Carpal tunnel syndrome, a common median nerve compression, affects 3.3-3.45 per 1000 people annually.
- Smartwatches offer potential for continuous health monitoring, including atrial fibrillation detection.
Observation:
- This case series reports five patients experiencing median nerve compression symptoms.
- Patients presented with carpal tunnel syndrome symptoms and abnormal sensory neurography.
- All patients consistently wore a smartwatch for extended periods (over 24 hours/day) for several weeks to monitor heart rhythm.
Findings:
- Median nerve compression, mimicking carpal tunnel syndrome, was linked to prolonged, tight smartwatch use.
- Symptoms and electrophysiological findings improved after patients discontinued smartwatch wear.
- The tight fit required for sensor accuracy may lead to nerve compression.
Implications:
- Smartwatch wearers should be aware of the risk of median nerve compression.
- Proper smartwatch fitting and usage (e.g., adjusting tightness, alternating wrists) are crucial to prevent nerve injury.
- While valuable for health monitoring, smartwatch application requires careful consideration of potential adverse effects on peripheral nerves.
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