ArticleClinical anatomy (New York, N.Y.)2021
The series of smooth muscle structures in the pelvic floors of men: Dynamic coordination of smooth and skeletal muscles.
Article in Clinical anatomy (New York, N.Y.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 16 citations in OpenAlex.
- Macroscopical and histological characterization of the perineal membrane and deep perineal pouch.Journal of anatomy · 2026Article
- New anatomical insight into the muscular structure of the anal canal: revealing Treitz muscle as a directional shift of the internal anal sphincter.Annals of coloproctology · 2025Article
- Novel Anatomical Findings in Robot-Assisted Prostatectomy and Optimal Dissection Layer Selection for Preserving Urethral Support Structures.The Prostate · 2025Article
- Presence of smooth muscle continuous with the rectal and vaginal walls in the deep perineal space prompts reconsideration of the deep transverse perineal muscle.Scientific reports · 2025Article
- Three-dimensional heterogeneity of smooth muscle fiber density anterior to the rectum in males: quantitative analysis with implications for transanal total mesorectal excision.International journal of colorectal disease · 2025Article
- Three-dimensional Analysis of the Distribution of Smooth and Skeletal Muscle Tissue Around the Female Urethra.International urogynecology journal · 2025Article
- Whole Exome Sequencing Reveals Candidate Variants in Ion Channel Genes for Pelvic Muscle Dysfunction in Young Females with a Family History.International urogynecology journal · 2025Article
- Significant relationship between musculoaponeurotic attachment of the abdominal and thigh adductor muscles to the pubis: implications for the diagnosis of groin pain.Anatomical science international · 2024Article
- Pelvic floor and perineal muscles: a dynamic coordination between skeletal and smooth muscles on pelvic floor stabilization.Anatomical science international · 2023Review
- Novel combination method of wide-range serial sectioning and 3D reconstruction visualizing both macro-level dynamics and micro-level interactions in an attempt to analyze the female pelvic floor.Anatomical science international · 2023Review
- Anatomy of Cowper's gland in humans suggesting a secretion and emission mechanism facilitated by cooperation of striated and smooth muscles.Scientific reports · 2021Article
- The series of smooth muscle structures in the pelvic floors of men: Dynamic coordination of smooth and skeletal muscles.Clinical anatomy (New York, N.Y.) · 2021Article
- Anatomic Study of Hip Pericapsular Muscle Arrangement on the Joint Capsule.JB & JS open accessArticle
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 1 country.
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Abstract
introductionRecent studies have revealed the extended nature of smooth muscle structures in the pelvic floor, revising the conventional understanding of the "perineal body." Our aim was to clarify the three-dimensional configuration and detailed histological properties of the smooth muscle structures in the region anterior to the rectum and anal canal in men. MATERIALS AND
methodsFour male cadavers were subjected to macroscopic and immunohistological examinations. The pelvis was dissected from the perineal side, as in the viewing angle during transperineal surgeries. Serial transverse sections of the region anterior to the rectum and anal canal were stained with Masson's trichrome and immunohistological stains to identify connective tissue, smooth muscle, and skeletal muscle.
resultsThere was a series of smooth muscle structures continuous with the longitudinal muscle of the rectum in the central region of the pelvic floor, and three representative elements were identified: the anterior bundle of the longitudinal muscle located between the external anal sphincter and bulbospongiosus; bilateral plate-like structures with transversely-oriented and dense smooth muscle fibers; and the rectourethral muscle located between the rectum and urethra. In addition, hypertrophic tissue with smooth muscle fibers extended from the longitudinal muscle in the anterolateral portion of the rectum and contacted the levator ani.
conclusionsThe series of smooth muscle structures had fiber orientations and densities that differed among locations. The widespread arrangement of the smooth muscle in the pelvic floor suggests a mechanism of dynamic coordination between the smooth and skeletal muscles.
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