High-frequency ultrasonography in the diagnosis of sciatic nerve and branches diseases
WANG Yue-xiang1, GUO Yi-zhu2, TANG Pei-fu2, ZHANG Li-hai2 (1.Department of Ultrasound, 2.Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China)
Objective To observe the value of high-frequency ultrasonography in diagnosing the sciatic nerve and its branches diseases. Methods Seventy-eight patients with suspected abnormalities of sciatic nerve or its branches underwent high-frequency ultrasonography. The sonograms were categorized as good or poor quality. The sonograms with good quality were diagnosed and compared with the final clinical data. Results In all patients, sonographic images of the sciatic nerve with good quality were obtained in 91.03% (71/78). Among these 71 patients, 57 were proved with nerve diseases, including 39 with nerve injury, 12 with nerve tumor, 3 with nerve entrapment, 1 with idiopathic neuritis, 1 with amputation neuroma and 1 with hereditary motor neuron disease. The sensitivity, specificity and accuracy of ultrasonography in diagnosing sciatic nerve abnormalities was 84.21%, 100% and 87.32%, respectively. Conclusion High-frequency ultrasonography is useful in diagnosis of the sciatic nerve and its branches diseases and can become an important imaging modality for sciatic nerve.