A More Precise Electromyographic Needle Approach for Examination of the Rhomboid Major

PM & R : the Journal of Injury, Function, and Rehabilitation
Ki Hoon KimDong Hwee Kim

Abstract

Safe and accurate needle access to the rhomboid major (RM) during electromyography is challenging due to the overlying trapezius muscle and the risk of pneumothorax. To investigate the RM anatomy associated with the trapezius using ultrasonography and to determine a safe and accurate needle insertion point for needle electromyography of the RM. Descriptive study. Department of physical medicine and rehabilitation of a tertiary clinic center. Participants between 23 and 71 years of age without any diseases (N = 25; 13 men, 12 women; 50 scapulae) were included. Ultrasonography of the RM and trapezius muscles around the scapula. The point at which the lateral margin of the trapezius crosses the medial border of the scapula (point A) was determined. The probe was positioned at the level of the midpoint (point M) between point A and the inferior angle of the scapula. The horizontal distance from the point at which the RM was the thickest (point X) to point M was measured. At point X, the depth of the RM, RM thickness, and the depth of the pleura were measured. The mean age and body mass index were 37.4 ± 12.0 years and 22.3 ± 2.1 kg/m2, respectively. Point M was located at a mean distance of 3.9 ± 0.6 cm proximal to the inferior ang...Continue Reading

References

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Apr 25, 2006·Muscle & Nerve·Elaine S DateByung Kyu Park
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Sep 4, 2015·Muscle & Nerve·Charles D KassardjianEric J Sorenson
Mar 9, 2017·Muscle & Nerve·Daniel CushmanMasaru Teramoto

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Citations

Aug 31, 2019·American Journal of Physical Medicine & Rehabilitation·Daniel M CushmanLigia Onofrei

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