Ultrasound Measurements of the Ulnar Nerve at the Medial Epicondyle Correlate With Electrodiagnostic Studies.
| Autor: | Aloi NF; University of Pittsburgh School of Medicine, PA, USA.; University of Pittsburgh Medical Center, PA, USA., Hyzny R; University of Pittsburgh School of Medicine, PA, USA., Fowler JR; University of Pittsburgh Medical Center, PA, USA. |
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| Jazyk: | angličtina |
| Zdroj: | Hand (New York, N.Y.) [Hand (N Y)] 2024 Jun 21, pp. 15589447241259805. Date of Electronic Publication: 2024 Jun 21. |
| DOI: | 10.1177/15589447241259805 |
| Abstrakt: | Background: Cubital tunnel syndrome is the second most common compressive neuropathy in the upper extremity and is commonly evaluated with electrodiagnostic studies (EDS). Ultrasound (US) has emerged as a potentially more efficient alternative to EDS. The purpose of this study is to evaluate whether measurements of the cross-sectional area (CSA) of the ulnar nerve at the elbow correlate with EDS results. Methods: This study was a prospective analysis of patients who presented with signs and symptoms consistent of cubital tunnel syndrome, who received USs of the ulnar nerve at the elbow and nerve conduction tests. Pearson correlation coefficients were used to evaluate the correlation between ulnar nerve CSA and electrodiagnostic data. t Tests were used to evaluate statistical differences between the mean ulnar nerve CSA of patients with positive or negative nerve conduction study results. Youden Index was used to calculate the optimal cut-off point for US CSA based on maximal sensitivity and specificity. Statistical significance was based on a two-sided P less than .05. Results: The association between increasing US CSA at the medial epicondyle with slowing of the conduction velocity of the ulnar motor nerve across the elbow was statistically significant ( r = -0.35, P = .02). Patients with positive EDS tests had significantly larger nerve size than those with negative tests (all P s < .03). A cut-off point of greater than or equal to 11 mm 2 had a sensitivity of 70.83% and specificity of 66.67%. Conclusions: Larger ulnar nerve CSAs correlate with slowing of the conduction velocity on EDSs, and those with positive EDSs have larger nerve sizes than those with negative tests. Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. JRF is a member of the Integra Life Sciences Nerve Advisory Board, however, this relationship has no conflict with this manuscript. |
| Databáze: | MEDLINE |
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