期刊
MUSCLE & NERVE
卷 68, 期 1, 页码 20-28出版社
WILEY
DOI: 10.1002/mus.27783
关键词
adult; anatomy; nerve cross-sectional area; normative values; ultrasound imaging
This study conducted a systematic review and meta-analysis to evaluate the normative sonographic values for adult peripheral nerve cross-sectional area (CSA). The results showed that the radial, common fibular, and tibial nerves have relatively higher CSA at specific anatomical locations. These findings provide valuable reference for clinicians and researchers studying adult peripheral nerve anatomy.
Introduction/AimsAlthough electromyography remains the gold standard for assessing and diagnosing peripheral nerve disorders, ultrasound has emerged as a useful adjunct, providing valuable anatomic information. The objective of this study was to conduct a systematic review and meta-analysis evaluating the normative sonographic values for adult peripheral nerve cross-sectional area (CSA). MethodsMedline and Cochrane Library databases were systematically searched for healthy adult peripheral nerve CSA, excluding the median and ulnar nerves. Data were meta-analyzed, using a random-effects model, to calculate the mean nerve CSA and its 95% confidence interval (CI) for each nerve at a specific anatomical location (= group). ResultsThirty groups were identified and meta-analyzed, which comprised 16 from the upper extremity and 15 from the lower extremity. The tibial nerve (n = 2916 nerves) was reported most commonly, followed by the common fibular nerve (n = 2580 nerves) and the radial nerve (n = 2326 nerves). Means and 95% confidence interval (CIs) of nerve CSA for the largest number of combined nerves were: radial nerve assessed at the spiral groove (n = 1810; mean, 5.14 mm(2); 95% CI, 4.33 to 5.96); common fibular nerve assessed at the fibular head (n = 1460; mean, 10.18 mm(2); 95% CI, 8.91 to 11.45); and common fibular nerve assessed at the popliteal fossa (n = 1120; mean, 12.90 mm(2); 95% CI, 9.12 to 16.68). Publication bias was suspected, but its influence on the results was minimal. DiscussionTwo hundred thirty mean CSAs from 15 857 adult nerves are included in the meta-analysis. These are further categorized into 30 groups, based on anatomical location, providing a comprehensive reference for the clinician and researcher investigating adult peripheral nerve anatomy.
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