Anatomical Basis of Pronator Teres for Electromyography Needle Placement Using Ultrasonography
Anatomical Basis of Pronator Teres for Electromyography Needle Placement Using Ultrasonography
- 주제(키워드) Forearm , Electromyography , Ultrasonography
- 발행기관 대한재활의학회
- 발행년도 2015
- 총서유형 Journal
- UCI G704-000430.2015.39.1.022
- KCI ID ART001964714
- 본문언어 영어
초록/요약
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.
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