| Objective To analyze the value of neuromyography combined with high-frequency ultrasound in carpal tunnel syndrome (CTS). Methods A total of 93 CTS patients who were treated in Beijing Jishuitan Hospital from January 2022 to January 2024 were selected as the research subjects (CTS group), and 35 healthy people who were examined in the Physical Examination Center of the hospital during the same period were selected as the healthy group. Both groups of subjects underwent EMG examination and high-frequency ultrasound examination. The changes in EMG examination and high-frequency ultrasound indicators of the two groups were compared. The value of EMG examination combined with high-frequency ultrasound in CTS was detected by the four-cell table method. Patients in the CTS group were divided into mild group (n=30), moderate group (n=40) and severe group (n=23) according to the severity of the disease, and the changes in the levels of cross-sectional area (CSA), cross-sectional area difference (△-CSA) and cross-sectional area ratio (R-CSA) were compared. Results Compared with the healthy group, the motor conduction velocity and muscle action potential level of the median nerve motor conduction in the CTS group were lower, and the distal latency level was higher than that in the healthy group (P<0.05). Compared with the healthy group, the sensory conduction velocity and sensory nerve motor potential level of the median nerve sensory conduction in the CTS group were lower, and the latency difference level between the median nerve and the ulnar nerve was higher than that in the healthy group (P<0.05). Compared with the healthy group, the CSA, △-CSA, and R-CSA levels of the CTS group were higher (P<0.05). The sensitivity of EMG, high-frequency ultrasound, and EMG+high-frequency ultrasound in diagnosing CTS was 82.61%, 77.42%, and 91.40%, respectively, the specificity was 88.57%, 82.86%, and 94.29%, and the accuracy was 79.57%, 76.34%, and 93.55%, respectively. The sensitivity, specificity, and accuracy of EMG+ high-frequency ultrasound diagnosis were higher than those of EMG and high-frequency ultrasound diagnosis alone (P<0.05). Conclusion EMG examination and high-frequency ultrasound examination have high consistency. The combined diagnosis of the two can improve the diagnostic value of CTS. At the same time, high-frequency ultrasound can evaluate the severity of CTS patients and help guide treatment. |
