Prolonged phone-call posture causes changes of ulnar motor nerve conduction across elbow

Luca Padua, D. Coraci, C. Erra, Pietro Emiliano Doneddu, Giuseppe Granata, Paolo Maria Rossini

Research output: Contribution to journalArticlepeer-review


Objective: Postures and work-hobby activities may play a role in the origin and progression of ulnar neuropathy at the elbow (UNE), whose occurrence appears to be increasing. The time spent on mobile-phone has increased in the last decades leading to an increased time spent with flexed elbow (prolonged-phone-posture, PPP). We aimed to assess the effect of PPP both in patients with symptoms of UNE and in symptom-free subjects. Methods: Patients with pure sensory symptoms of UNE and negative neurophysiological tests (MIN-UNE) and symptom-free subjects were enrolled. We evaluated ulnar motor nerve conduction velocity across elbow at baseline and after 6, 9, 12, 15, and 18 min of PPP in both groups. Fifty-six symptom-free subjects and fifty-eight patients were enrolled. Globally 186 ulnar nerves from 114 subjects were studied. Results: Conduction velocity of ulnar nerve across the elbow significantly changed over PPP time in patients with MIN-UNE, showing a different evolution between the two groups. Conclusions: PPP causes a modification of ulnar nerve functionality in patients with MIN-UNE. Significance: PPP may cause transient stress of ulnar nerve at elbow.

Original languageEnglish
Pages (from-to)2728-2732
Number of pages5
JournalClinical Neurophysiology
Issue number8
Publication statusPublished - Aug 1 2016


  • Epidemiology
  • Mobile phone
  • Nerve entrapment syndrome
  • Neuropathy
  • Ulnar nerve
  • Ulnar neuropathy at elbow

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology
  • Physiology (medical)
  • Sensory Systems


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