Abstract
A specific, smooth muscle-mediated interface between the levator ani muscle (LA) and the pelvic viscera has been reported. Using 110 sagittally trimmed anorectal tissue strips (80 lateral, 15 anterior and 15 dorsal specimens) obtained from the donated cadavers of 46 elderly subjects, we examined variations in the interface between the LA and the rectal muscularis propria, including the so-called conjoined longitudinal muscles. In type A (9/46), little or no tissue connected the LA to the external rectal muscularis propria, but the LA and external sphincteric mass formed a definite complex. In type B (26/46), the covering fascia of the LA changed abruptly into smooth muscles, which merged into the external rectal muscularis propria. In type C (11/46), most of the LA-associated connective tissues, composed of smooth muscles, were tightly connected to the internal and external rectal muscularis propria. These variations seemed to depend on the morphology of the recto-urethralis, the lateral extension of which reinforced the LA-associated smooth muscles sufficiently to form type B and C insertions. We also demonstrated differences in the interfacial tissues between the LA and other pelvic viscera. We hypothesize that, to avoid inju...Continue Reading
References
Jan 1, 1990·Acta Anatomica·A ShafikO el-Sibaei
Mar 1, 1969·The Anatomical Record·P S Milley, D H Nichols
Oct 1, 1983·Radiology·E GrabbeR Winkler
Dec 1, 1995·Radiology·S M HussainJ S Laméris
Jan 1, 1995·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·H Fritsch, H Hötzinger
Aug 1, 1994·Current Opinion in Obstetrics & Gynecology·A R Smith
May 1, 1996·Radiology·A A AlexanderD A Nagle
Jun 1, 1997·AJR. American Journal of Roentgenology·A FrudingerM A Kamm
Jan 1, 1997·Surgical and Radiologic Anatomy : SRA·S Di LolloM Gulisano
May 1, 1999·Diseases of the Colon and Rectum·C FuciniL Messerini
Jul 9, 1999·AJR. American Journal of Roentgenology·L K Stewart, S R Wilson
Nov 26, 1999·Gastrointestinal Endoscopy·M A KonerdingV F Eckardt
Feb 13, 2002·Archives of Histology and Cytology·Y Sunami-KataokaA Ohtsuka
Jul 12, 2002·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Gen MurakamiTaiji Tsukamoto
Aug 29, 2002·Surgical and Radiologic Anatomy : SRA·N VazzolerP Plante
Mar 8, 2003·International Journal of Urology : Official Journal of the Japanese Urological Association·Akio MatsubaraTsuguru Usui
Jul 1, 1955·The British Journal of Surgery·J C GOLIGHERJ J BROSSY
Aug 1, 1964·The Anatomical Record·W H ROBERTSG KRISHINGNER
Sep 25, 2003·Surgical and Radiologic Anatomy : SRA·M DiopG Monnier
Dec 23, 2003·Anatomical Science International·Mitsuharu TamakawaMasato Hareyama
Jun 30, 2004·The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association·Kamile MarakogluFahrettin Goze
Jan 1, 1950·American Journal of Surgery·H COURTNEY
Citations
Mar 3, 2007·International Urogynecology Journal and Pelvic Floor Dysfunction·Ichiro NagataAiji Ohtsuka
Jun 15, 2007·International Urogynecology Journal and Pelvic Floor Dysfunction·Hideo SogaMasayasu Koyama
Feb 27, 2009·Anatomical Science International·Hajime OsanaiHaruyuki Tatsumi
Mar 21, 2007·Anatomical Science International·Kazuaki UchimotoYoshiyuki Nakajima
Oct 5, 2010·Okajimas Folia Anatomica Japonica·Takashi ArakawaMineko Fujimiya
Oct 6, 2006·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Susumu YoshidaYuji Murata
Nov 30, 2015·International Journal of Colorectal Disease·Takashi ArakawaBaik Hwan Cho
Sep 18, 2015·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Zhe Wu JinShin-Ichi Abe
Jul 16, 2008·International Journal of Urology : Official Journal of the Japanese Urological Association·Hideo SogaMasato Fujisawa
Jun 19, 2008·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Veronica MacchiRaffaele De Caro
Mar 21, 2013·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Keisuke HiedaAkio Matsubara
Sep 11, 2010·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Eiji HirataYoshiki Kudo
May 31, 2014·BioMed Research International·Nobuyuki Hinata, Gen Murakami
Oct 22, 2014·International Journal of Colorectal Disease·Ji Hyun KimBaik Hwan Cho
Aug 26, 2015·PloS One·Yi WuWouter H Lamers
Jan 24, 2009·Journal of Clinical Oncology : Official Journal of the American Society of Clinical Oncology·Yusuke Kinugasa, Kenichi Sugihara
Apr 4, 2013·Yonsei Medical Journal·Yusuke KinugasaKenichi Sugihara
Jul 24, 2012·Anatomy & Cell Biology·Hiroshi MasumotoAkio Matsubara
Jun 6, 2012·Yonsei Medical Journal·Yusuke KinugasaKenichi Sugihara
Apr 3, 2014·Anatomy & Cell Biology·Nobuyuki HinataMineko Fujimiya
Jul 31, 2007·The Tohoku Journal of Experimental Medicine·Hitoshi NiikuraNobuo Yaegashi
Nov 21, 2019·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·Krystel Nyangoh TimohT Bessede
Sep 7, 2019·Diseases of the Colon and Rectum·Tomoaki OkadaYoshiharu Sakai
Apr 7, 2016·Diseases of the Colon and Rectum·Yuichiro TsukadaNorio Saito
May 19, 2020·Anatomical Science International·Mayumi Kobayashi KatoKeiichi Akita
Nov 3, 2020·Surgical and Radiologic Anatomy : SRA·Gentaro IshiyamaShinichi Abe