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ORIGINAL ARTICLE
Year : 2018  |  Volume : 26  |  Issue : 2  |  Page : 85-89

Ultrasonographic reference values for assessing normal sciatic nerve ultrasonography in the normal population


1 Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province; Department of Neurology, Lianshui County People's Hospital of Jiangsu Province, Huaian, Jiangsu Province, China
2 Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou Province, China
3 Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences, Laramie, WY, United States

Correspondence Address:
Dr. Shan Wu
Department of Neurology, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/JMU.JMU_6_17

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Objective: High-resolution ultrasonography (HRUS) has been used recently to characterize median and ulnar nerves but is seldom used to characterize the lower extremity nerves. The reference standard for normal the lower extremity nerves has not been established. Thus, this study measured the cross-sectional areas (CSAs) of the sciatic nerve of 200 healthy male or female volunteers, aged 18–80 using HRUS. These data provide basic clinical data for the use of high-resolution ultrasound for the future diagnosis, treatment, and prognostic evaluation of peripheral neuropathies. Methods: Two hundred healthy volunteers with 400 lower extremities were studied with HRUS. According to their age, the subjects were assigned to young group (18-30 years, n = 75), middle group. (31-60 years, n = 70), and old group(61-80 year, n = 55).Age, sex, height, weight were recorded and CSAs of sciatic nerve were obtained at every predetermined sites. Results: The mean CSAs of sciatic nerves at GS and MGPF were 0.527 ± 0.028 cm2 and 0.444 ± 0.026 cm2 respectively. Pearson's correlation analysis showed that the mean CSAs were correlated with height and weight. There was no difference in mean CSAs among the three groups (P > 0.05). Women had smaller CSAs of the normal Sciatic nerves than men in two measuring sites (GS, MGPF) (P < 0.05). Conclusion: Peripheral nerve ultrasonography is a reliable and reproducible diagnostic method in the hands of experienced examiners. Normal values for the sciatic nerve nerves are provided by our study. Thus, reference values of Sciatic nerve CSA of the lower extremity can facilitate the analysis of abnormal nerve conditions.


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