Annals of Rehabilitation Medicine

"Jin Young Im"

Original Articles

Optimal Placement of Needle Electromyography in Extensor Indicis: A Cadaveric Study: Jin Young Im, Hong Bum Park, Seok Jun Lee, Seong Gyu Lim, Ki Hoon Kim, Dasom Kim, Im Joo Rhyu, Byung Kyu Park, Dong Hwee Kim; Ann Rehabil Med 2018;42(3):473-476. Published online June 27, 2018; DOI: https://doi.org/10.5535/arm.2018.42.3.473

Abstract
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Objective
To identify the center of extensor indicis (EI) muscle through cadaver dissection and compare the accuracy of different techniques for needle electromyography (EMG) electrode insertion.
Methods
Eighteen upper limbs of 10 adult cadavers were dissected. The center of trigonal EI muscle was defined as the point where the three medians of the triangle intersect. Three different needle electrode insertion techniques were introduced: M1, 2.5 cm above the lower border of ulnar styloid process (USP), lateral aspect of the ulna; M2, 2 finger breadths (FB) proximal to USP, lateral aspect of the ulna; and M3, distal fourth of the forearm, lateral aspect of the ulna. The distance from USP to the center (X) parallel to the line between radial head to USP, and from medial border of ulna to the center (Y) were measured. The distances between 3 different points (M1– M3) and the center were measured (marked as D1, D2, and D3, respectively).
Results
The median value of X was 48.3 mm and that of Y was 7.2 mm. The median values of D1, D2 and D3 were 23.3 mm, 13.3 mm and 9.0 mm, respectively.
Conclusion
The center of EI muscle is located approximately 4.8 cm proximal to USP level and 7.2 mm lateral to the medial border of the ulna. Among the three methods, the technique placing the needle electrode at distal fourth of the forearm and lateral to the radial side of the ulna bone (M3) is the most accurate and closest to the center of the EI muscle.

Citations

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Ultrasonographic Analysis of Optimal Needle Placement for Extensor Indicis
Jin Young Kim, Hyun Seok, Sang-Hyun Kim, Yoon-Hee Choi, Jun Young Ahn, Seung Yeol Lee
Annals of Rehabilitation Medicine.2020; 44(6): 450. CrossRef

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Ultrasonographic Study of the Anatomical Relationship Between the Lateral Antebrachial Cutaneous Nerve and the Cephalic Vein: Hyung Soon Im, Jin Young Im, Ki Hoon Kim, Dong Hwee Kim, Byung Kyu Park; Ann Rehabil Med 2017;41(3):421-425. Published online June 29, 2017; DOI: https://doi.org/10.5535/arm.2017.41.3.421

Abstract
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Objective

To define the anatomy of the lateral antebrachial cutaneous nerve (LABCN) and the cephalic vein (CV) in the anterior forearm region of living humans using ultrasonography for preventing LABCN injury during cephalic venipuncture.

Methods

Thirty forearms of 15 healthy volunteers were evaluated using ultrasonography to identify the point where the LABCN begins to contact with the CV, and the point where the LABCN separates from the CV. The LABCN pathway in the forearm in relation to a nerve conduction study was also evaluated.

Results

The LABCNs came in contact with the CV at a mean of 0.6±1.6 cm distal to the elbow crease, and separated from the CV at a mean of 7.0±3.4 cm distal to the elbow crease. The mean distance between the conventionally used recording points (point R) for the LABCN conduction study and the actual sonographic measured LABCN was 2.4±2.4 mm. LABCN usually presented laterally at the point R (83.3%).

Conclusion

The LABCN had close proximity to the CV in the proximal first quarter of the forearm. Cephalic venipuncture in this area should be avoided, and performed with caution if needed.

Citations

Citations to this article as recorded by

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The radial trinity block of the upper extremity: combined block of the radial, median and lateral cutaneous nerves of the forearm for radius fracture
Amjad Maniar, Rammurthy Kulkarni
British Journal of Anaesthesia.2024; 133(5): 1120. CrossRef
The relationship between the lateral cutaneous antebrachial nerve and the superficial branch of the radial nerve and its impact on regional anesthetic and pain blocks of the thumb; What is more important: Nerves or dermatomes?
Alen Palackic, Stefan Orthaber, Peter Marhofer, Rainer J. Litz, Georg C. Feigl
Annals of Anatomy - Anatomischer Anzeiger.2023; 245: 152018. CrossRef
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Gregory P. Casey
The Anatomical Record.2022; 305(1): 144. CrossRef
MRI findings of chronic distal tendon biceps reconstruction and associated post-operative findings
Dylan N. Greif, Samuel H. Huntley, Sameer Alidina, Julianne Muñoz, Joseph H. Huntley, Harry G. Greditzer, Jean Jose
Skeletal Radiology.2021; 50(6): 1095. CrossRef
Anatomical analysis of antebrachial cutaneous nerve distribution pattern and its clinical implications for sensory reconstruction
Hui Li, Weiwei Zhu, Shouwen Wu, Zairong Wei, Shengbo Yang, Leila Harhaus
PLOS ONE.2019; 14(9): e0222335. CrossRef
A review of main anatomical and sonographic features of subcutaneous nerve injuries related to orthopedic surgery
Anne Causeret, Isabelle Ract, Jérémy Jouan, Thierry Dreano, Mickaël Ropars, Raphaël Guillin
Skeletal Radiology.2018; 47(8): 1051. CrossRef