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THE DISTRIBUTION OF NERVE ENTRY POINTS OF THE ACCESSORY NERVE TO THE TRAPEZIUS MUSCLE IN ADULT VIETNAMESE CADAVERS AND ITS APPLICATION IN MUSCLE NERVE BLOCK
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Abstract
Introcduction: Myofascial pain syndrome is an important health concern. In Vietnam, no studies have been conducted on the distribution of nerve entry points of the accessory nerve within the trapezius muscle. Objective: To describe the distribution of nerve entry points of the accessory nerve to the trapezius muscle in adult Vietnamese cadavers. Materials and Methods: A cross-sectional descriptive study was conducted on 18 trapezius muscles from fresh cadavers of adult Vietnamese individuals preserved by refrigeration. Results: On the coordinate system, nerve entry points were predominantly concentrated in quadrant IV (68.3%). When the horizontal axis was divided into 16 units, the nerve entry points were confined within a rectangular area measuring five units along the horizontal axis (from unit 11 to unit 15) and one-fourth of the vertical axis in width. Unit 11 exhibited the highest concentration of nerve entry points, accounting for 26.47%. Conclusion: This study provides a detailed description of the distribution of nerve entry points of the accessory nerve to the trapezius muscle in adult Vietnamese cadavers, contributing valuable data to anatomical research and clinical applications.
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Keywords
Nerve entry points, accessory nerve, trapezius muscle.
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