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Updated: Mar 15, 2026

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The Correlation Between Smartphone Use and Compressive Ulnar Neuropathy at the Elbow: A Retrospective Study.

Gianmarco Vavalle1,2, Chiara Barbieri1,2, Davide Messina1,2

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Journal of Clinical Medicine
|March 14, 2026
PubMed
Summary

Smartphone use, particularly with sustained elbow flexion, is linked to Cubital Tunnel Syndrome (CuTS). Ergonomic posture, not just usage time, is a key factor in developing this nerve compression.

Keywords:
cubital tunnel syndromedigital healthelbow flexionperipheral nerve compressionsmartphone useulnar neuropathy

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Area of Science:

  • Neurology
  • Orthopedics
  • Public Health

Background:

  • Cubital Tunnel Syndrome (CuTS) is a common upper limb neuropathy.
  • Smartphone adoption may introduce novel risk factors for ulnar nerve compression.
  • This study investigates the link between smartphone use and CuTS.

Purpose of the Study:

  • To explore the correlation between smartphone usage patterns and the incidence of Cubital Tunnel Syndrome.
  • To identify specific smartphone use behaviors associated with CuTS development.

Main Methods:

  • Retrospective observational study of 100 subjects (50 CuTS patients, 50 controls).
  • Data collected on daily smartphone use, activity type, and posture.
  • Statistical analysis using t-tests and Chi-square tests (p < 0.05).

Main Results:

  • Higher daily smartphone use in CuTS group (4.94h) vs. controls (4.04h), not statistically significant (p=0.0716).
  • Significant association between CuTS and elbow-flexed posture during smartphone use (82% vs. 56%, p=0.019).
  • No significant difference in smartphone activity type between groups (p=0.858).

Conclusions:

  • Ergonomically disadvantageous postures, especially sustained elbow flexion during smartphone use, are linked to CuTS.
  • Modifiable behavioral risk factors, like posture, are crucial for CuTS prevention in the digital age.
  • Further research is needed to confirm causal mechanisms and explore confounders.