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Sonographic incidence of ulnar nerve (sub)luxation and its associated clinical and electrodiagnostic characteristics

Authors

  • Petronella J. Van Den Berg MD,

    1. Department of Neurology, St. Elisabeth Hospital, 5000 LC Tilburg, The Netherlands
    Current affiliation:
    1. Department of Neurology, Maxima Medical Centre, Veldhoven, The Netherlands
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  • Sander M. Pompe MD,

    1. Departments of Neurology and Clinical Neurophysiology, Atrium Medical Centre Heerlen, The Netherlands
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  • Roy Beekman MD, PhD,

    1. Departments of Neurology and Clinical Neurophysiology, Atrium Medical Centre Heerlen, The Netherlands
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  • Leo H. Visser MD, PhD

    Corresponding author
    1. Department of Neurology, St Elisabeth Hospital, Tilburg, The Netherlands
    • Department of Neurology, St. Elisabeth Hospital, 5000 LC Tilburg, The Netherlands
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Correspondence to: L. H. Visser; E-mail: l.visser@elisabeth.nl

Abstract

Introduction: The aim of this study was to assess the presence of (sub)luxation of the ulnar nerve in patients with ulnar neuropathy at the elbow (UNE) compared with healthy controls (HC). We assessed its clinical patterns, electrodiagnostic, and sonographic characteristics. Methods: Using high-resolution sonography, we studied the incidence of (sub)luxation in a cohort of 342 patients and 70 HC. Results: Subluxation occurred in 14% and luxation in 6.7% of the UNE patients versus 5.7% and 5.7%, respectively, in HC (no significant differences). Pain at the elbow occurred more often in patients with (sub)luxation (P = 0.007). Electrodiagnostic and sonographic findings did not differ between patients with or without (sub)luxation. Conclusions: The incidence of ulnar nerve (sub)luxation between patients with UNE and HC does not differ. UNE patients with (sub)luxation do not have specific clinical or electrodiagnostic findings, apart from experiencing pain at the elbow more often. Muscle Nerve 47: 849–855, 2013

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