Impact of anatomical variations on ultrasonographic reference values of lower extremity peripheral nerves
| Autor: | Hirofumi Maruyama, Takamichi Sugimoto, Masahiro Nakamori, Akemi Hironaka, Junichiro Kuga, Tomohisa Nezu, Kazuhide Ochi |
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| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Adult Male Physiology Sural nerve 030105 genetics & heredity 03 medical and health sciences Cellular and Molecular Neuroscience Young Adult 0302 clinical medicine Sural Nerve Reference Values Physiology (medical) medicine Humans Tibial nerve Popliteal region Aged Ultrasonography business.industry Anatomic Variation Peroneal Nerve Anatomy Middle Aged Circumference Peripheral medicine.anatomical_structure Lower Extremity Reference values Female Neurology (clinical) Ankle Tibial Nerve business 030217 neurology & neurosurgery |
| Zdroj: | MusclenerveREFERENCES. 63(6) |
| ISSN: | 1097-4598 |
| Popis: | Introduction/aims Cross-sectional area (CSA) reference values using ultrasonography vary widely for lower extremity peripheral nerves. In addition, there is a lack of data on the muscular branches of the tibial nerve and the anatomical variations of the sural nerve. We aimed to evaluate the ultrasonographic reference values for lower extremity peripheral nerves considering different anatomical variations and physical factors. Methods The CSA of the lower extremity nerve was measured at 10 sites. In addition to establishing reference values, differences in the CSA owing to anatomical variations were verified. The relationship between CSA and physical factors, such as age, height, weight, body mass index, and ankle circumference, was also examined. Results A total of 100 healthy Japanese volunteers were recruited. The mean CSA of the sural nerve significantly differed depending on its formation pattern (1.4-1.8 mm2 ). The mean decreases in CSAs from the proximal to distal tibial and fibular nerves within the popliteal region significantly differed based on the fine branching pattern. The maximum value of the mean decreases in CSAs in the tibial and fibular nerves reached 7.2 and 2.5 mm2 , respectively. With respect to physical factors, age and ankle circumferences were associated with CSA at several measurement sites. Discussion Fine branching from the tibial and fibular nerves and sural nerve formation may affect CSA measurements. The establishment of accurate CSA reference values requires consideration of anatomical variations in the peripheral nerves of the lower extremity. |
| Databáze: | OpenAIRE |
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