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Related Experiment Video

Updated: Jan 25, 2026

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Nerve Diameter in the Hand: A Cadaveric Study.

Ricardo Ortiz1, Ritsaart F Westenberg2, Christopher G Langhammer2

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Plastic and Reconstructive Surgery. Global Open
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Summary
This summary is machine-generated.

Hand nerve diameters vary significantly, with larger nerves found proximally and the median nerve being notably larger than the ulnar nerve. Body mass index and hand dimensions correlate with nerve diameter, crucial data for hand reconstructive surgery.

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Area of Science:

  • Anatomy
  • Hand Surgery
  • Nerve Repair

Background:

  • Hand nerve injuries are frequent and complicate reconstructive surgery.
  • Accurate nerve diameter matching is vital for successful nerve repair techniques.
  • Understanding anatomical variations is key for surgical planning.

Purpose of the Study:

  • To document hand and wrist nerve diameters and their variations.
  • To explore correlations between nerve diameter and external hand measurements or BMI.
  • To provide essential data for reconstructive procedures.

Main Methods:

  • Utilized 18 adult cadaveric hands (both sexes, aged 20-86).
  • Performed 33 nerve diameter measurements per hand using digital calipers.
  • Measurements were taken by two independent observers to ensure reliability.

Main Results:

  • Nerve diameter increased proximally within flexor zones.
  • Internal common digital nerves were larger than external digital nerves in zone 3.
  • Median nerve was approximately twice the size of the ulnar nerve in the wrist.
  • Positive correlations found between BMI, hand span, hand width, and nerve diameter.

Conclusions:

  • Established reference values for hand and wrist nerve diameters.
  • Highlighted significant differences in nerve sizes crucial for surgeons.
  • Emphasized the importance of this anatomical data for advancing hand reconstruction and nerve repair technologies.