Compensatory relation in peripheral distribution of the cutaneous nerve originated from the radial nerve and the musculocutaneous nerve

DOI
  • Mamiya Miku
    Tokorozawa Loyal Hospital
  • Kameda Midori
    Tokyo Women's Medical University Hospital
  • Tokita Kounosuke
    School of Physical Therapy, Faculty of Health and Medical Care, Saitama Medical University
  • Kojima Ryuhei
    School of Physical Therapy, Faculty of Health and Medical Care, Saitama Medical University
  • Aizawa Yukio
    The Nippon Dental University School of Life Dentistry at Niigata
  • Kumaki katsuji
    The Nippon Dental University School of Life Dentistry at Niigata
  • Kageyama Ikuo
    The Nippon Dental University School of Life Dentistry at Niigata

Bibliographic Information

Other Title
  • 筋皮神経と橈骨神経由来の皮神経の分布域の関係

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Description

<p>It has been explained in many textbooks that the musculocutaneous nerve is belong to the ventral division and the radial nerve is to the dorsal division of the brachial plexus. However, the lateral antebrachial cutaneous nerve usually communicated with superficial branch of the radial nerve at the radial side of the distal part of the forearm and distributed in some area of the dorsal side of the wrist region, while the superficial branch of the radial nerve also usually distributed into the palmar side of the proximal part of thumb. Moreover, we encountered a special case of the total defect of the superficial branch of the radial nerve, which was compensated by the lateral antebrachial cutaneous nerve from the musculocutaneous nerve. It is suggested to be the musculocutaneous nerve carried not only the ventral fibers but also dose the dorsal fibers, and the radial nerve also carried some ventral fibers. These also might indicate that classification of the nerves as the ventral or the dorsal divisions are mainly based on the muscular components, however, the trunks of the cutaneous nerves generally running on the boundary area between ventral and dorsal regions contains both ventral and dorsal components.</p>

Journal

  • Structure and Function

    Structure and Function 21 (1), 4-10, 2022

    Co-medical Research Society of Structure and Function

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