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Constant existence of the sensory branch of the nerve to the pyramidalis distributing to the upper margin of the pubic ramus.
Anat Sci Int 2018; 93(4):405-413AS

Abstract

Twenty-one sides of 11 adult Japanese cadavers were investigated, and 2 of 21 sides exhibited absence of the pyramidalis. We observed that all of the nerves to the pyramidalis included the sensory nerve branch, which distributed to the aponeurotic tissue in the upper area of the pubic ramus. To investigate the clinical relevance and developmental process of the pyramidalis, detailed innervation patterns of the pyramidalis and the lumber plexus were examined and compared with the case of absent pyramidalis. The nerves to the pyramidalis could be classified into five types by the derivative nerves and two subtypes by their courses associated with the funiculus spermaticus. In the cases of absent pyramidalis, similar sensory branches distributed close to the upper area of the pubic ramus. We deduced that the sensory branch extended along with the muscular branch to the pyramidalis after development of the pyramidalis and that only the sensory branch remained in cases in which the pyramidalis disappeared. The two subtypes might associate with descensus testis. Surgeons performing inguinal hernia repair using a mesh and tension-free surgical technique should preserve the nerves around the funiculus spermaticus to avoid diminished proprioception in the lower abdominal wall.

Authors+Show Affiliations

Department of Rehabilitation of Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, 654-0142, Japan.Faculty of Health Care Sciences, Himeji Dokkyo University, 7-2-1 Kami-ono, Himeji, 670- 8524, Japan.Division of Anatomy and Neurobiology, Department of Physiology and Cell Biology, Kobe Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan. Department of Clinical Laboratory, Kobe University Hospital, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.Department of Anatomy, School of Life Dentistry at Niigata, The Nippon Dental University, 1-8 Hamaura-cho, Chuo-ku, Niigata, 951-8580, Japan.Division of Anatomy and Neurobiology, Department of Physiology and Cell Biology, Kobe Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.Department of Anatomy, Osaka Dental University, 8-1, Kuzuhanazono-cho, Hiraka, Osaka, 573-1121, Japan.Department of Rehabilitation of Sciences, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe, 654-0142, Japan. arakawa@people.kobe-u.ac.jp.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29349766

Citation

Haba, Daijiro, et al. "Constant Existence of the Sensory Branch of the Nerve to the Pyramidalis Distributing to the Upper Margin of the Pubic Ramus." Anatomical Science International, vol. 93, no. 4, 2018, pp. 405-413.
Haba D, Emura K, Watanabe Y, et al. Constant existence of the sensory branch of the nerve to the pyramidalis distributing to the upper margin of the pubic ramus. Anat Sci Int. 2018;93(4):405-413.
Haba, D., Emura, K., Watanabe, Y., Kageyama, I., Kikkawa, S., Uemura, M., & Arakawa, T. (2018). Constant existence of the sensory branch of the nerve to the pyramidalis distributing to the upper margin of the pubic ramus. Anatomical Science International, 93(4), pp. 405-413. doi:10.1007/s12565-018-0428-z.
Haba D, et al. Constant Existence of the Sensory Branch of the Nerve to the Pyramidalis Distributing to the Upper Margin of the Pubic Ramus. Anat Sci Int. 2018;93(4):405-413. PubMed PMID: 29349766.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Constant existence of the sensory branch of the nerve to the pyramidalis distributing to the upper margin of the pubic ramus. AU - Haba,Daijiro, AU - Emura,Kenji, AU - Watanabe,Yuko, AU - Kageyama,Ikuo, AU - Kikkawa,Satoshi, AU - Uemura,Mamoru, AU - Arakawa,Takamitsu, Y1 - 2018/01/18/ PY - 2017/08/22/received PY - 2018/01/08/accepted PY - 2018/1/20/pubmed PY - 2018/10/27/medline PY - 2018/1/20/entrez KW - Cadaver KW - Innervation KW - Lumber plexus KW - Macroscopic anatomy KW - Pyramidalis SP - 405 EP - 413 JF - Anatomical science international JO - Anat Sci Int VL - 93 IS - 4 N2 - Twenty-one sides of 11 adult Japanese cadavers were investigated, and 2 of 21 sides exhibited absence of the pyramidalis. We observed that all of the nerves to the pyramidalis included the sensory nerve branch, which distributed to the aponeurotic tissue in the upper area of the pubic ramus. To investigate the clinical relevance and developmental process of the pyramidalis, detailed innervation patterns of the pyramidalis and the lumber plexus were examined and compared with the case of absent pyramidalis. The nerves to the pyramidalis could be classified into five types by the derivative nerves and two subtypes by their courses associated with the funiculus spermaticus. In the cases of absent pyramidalis, similar sensory branches distributed close to the upper area of the pubic ramus. We deduced that the sensory branch extended along with the muscular branch to the pyramidalis after development of the pyramidalis and that only the sensory branch remained in cases in which the pyramidalis disappeared. The two subtypes might associate with descensus testis. Surgeons performing inguinal hernia repair using a mesh and tension-free surgical technique should preserve the nerves around the funiculus spermaticus to avoid diminished proprioception in the lower abdominal wall. SN - 1447-073X UR - https://www.unboundmedicine.com/medline/citation/29349766/Constant_existence_of_the_sensory_branch_of_the_nerve_to_the_pyramidalis_distributing_to_the_upper_margin_of_the_pubic_ramus L2 - https://dx.doi.org/10.1007/s12565-018-0428-z DB - PRIME DP - Unbound Medicine ER -