Anatomical basis of pronator teres for electromyography needle placement using ultrasonography
- Authors
- Park M.K.; Cheong I.Y.; Kim K.H.; Park B.K.; Kim D.H.
- Issue Date
- 2015
- Publisher
- Korean Academy of Rehabilitation Medicine
- Keywords
- Electromyography; Forearm; Ultrasonography
- Citation
- Annals of Rehabilitation Medicine, v.39, no.1, pp 39 - 46
- Pages
- 8
- Indexed
- SCOPUS
KCI
- Journal Title
- Annals of Rehabilitation Medicine
- Volume
- 39
- Number
- 1
- Start Page
- 39
- End Page
- 46
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/8415
- DOI
- 10.5535/arm.2015.39.1.39
- ISSN
- 2234-0645
2234-0653
- Abstract
- Objective To find the optimal needle insertion site for needle electromyography of the pronator teres (PT) muscle among commonly used sites. Methods: Fifty forearms of 25 healthy subjects were evaluated. Four expected needle insertion points were designated as follows. Point 0 was positioned at the midpoint between the medial epicondyle and medial border of biceps tendon in the elbow crease. Points 1, 2, and 3 were located 2 cm, 3.5 cm and 5 cm distal to point 0, respectively. We assumed that the thickness of PT and the distances between a vertical line from each point to the medial margin of the PT were significant parameters for finding the optimal site. Thus, we measured these parameters through ultrasonographic examination. Results: In men, the PT was thickest at point 2, and in women, at point 1. The distance between the expected needle insertion line and medial margin of PT was longest at point 1 in both men and women, and was statistically significant compared to points 2 and 3. Both men and women had neurovascular bundles located lateral to the expected needle insertion line. Conclusion: The most appropriate and safe needle electromyographic insertional site for the PT is 2-3.5 cm distal to the mid-point between the biceps tendon and medial epicondyle in the elbow crease and the needle should be inserted upward and medial. © 2015 by Korean Academy of Rehabilitation Medicine.
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Collections - 2. Clinical Science > Department of Physical Medicine and Rehabilitation > 1. Journal Articles
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