Correlation and diagnostic value of high frequency ultrasound and SWE quantitative parameters with ulnar nerve electrophysiology in patients with cubital tunnel syndrome
Correlation and diagnostic value of high frequency ultrasound and SWE quantitative parameters with ulnar nerve electrophysiology in patients with cubital tunnel syndrome
Objective To explore the correlation of quantitative parameters of high frequency ultrasound and shear wave elastography(SWE)with ulnar nerve electrophysiology in patients with cubital tunnel syndrome(CTS)and the diagnos-tic value of CTS.Methods A total of 49 patients with CTS admitted to the Second Affiliated Hospital of Xinjiang Medi-cal University from December 2021 to December 2022 were included in the CTS group.A total of 49 healthy volunteers were included in the control group.All patients underwent high-frequency ultrasonography,SWE and ulnar nerve electro-physiological examination.Pearson method was used to analyze the correlation between high-frequency ultrasound exami-nation[medial epicondylar cross-sectional area(CSA),maximum transverse diameter and circumference of ulnar nerve],SWE quantitative parameters[mean elastic modulus(EI),shear wave velocity(V)]with ulnar nerve electro-physiological examination results[motor conduction velocity(MCV)and sensory conduction velocity(SCV)]in CTS pa-tients.ROC curve was used to analyze the diagnostic value of high-frequency ultrasonography and SWE quantitative pa-rameters for CTS.Results The levels of CSA,EI and V in CTS group were significantly higher than those in control group(P＜0.05),and there was no significant difference in the maximum transverse diameter and circumference of ulnar nerve between two groups(P＞0.05).The levels of MCV and SCV in CTS group were lower than those in control group(P＜0.05).The results of Pearson correlation analysis showed that CSA,EI and V were negatively correlated with MCV and SCV(P＜0.05).ROC analysis results showed that the AUC(95％CI)were 0.679(0.577-0.770),0.718(0.618-0.804),and 0.720(0.620-0.806)for CSA,EI and V in the diagnosis of CTS alone,respectively,and the value was 0.893(0.815-0.947)when combined.The diagnostic efficiency of the three combined tests was higher than that of each single test(Z=3.065,2.899,2.734,P＜0.05).Conclusion In patients with high CTS,high-frequency ultrasound and SWE quantitative parameters are significantly correlated with the ulnar nerve electrophysiological indexes,among which CSA,EI and V can be used in the diagnosis of CTS,and the combination of the three has high diagnostic value.
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