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Scandinavian journal of gastroenterology. Supplement, 1984
The anal sphincter has not generally stimulated great scientific interest although anatomical and physiological disorders of this region are common and may be the cause of considerable suffering to the individual affected. Over the last decade there has, however, been an accelerating interest in the function of this important sphincter.
M M, Henry, J P, Thomson
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The anal sphincter has not generally stimulated great scientific interest although anatomical and physiological disorders of this region are common and may be the cause of considerable suffering to the individual affected. Over the last decade there has, however, been an accelerating interest in the function of this important sphincter.
M M, Henry, J P, Thomson
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Exoanal Imaging of the Anal Sphincters
Journal of Ultrasound in Medicine, 2017Since its introduction in the early 1990s, endoanal sonography has become the mainstay of morphologic assessment of the anal canal and sphincter, especially for obstetric anal sphincter trauma. Lack of availability of suitable systems and the invasive nature of the method have limited uptake and clinical utility. More recently, exoanal or transperineal/
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Parity and anal sphincter trauma
International Urogynecology Journal, 2019Obstetric anal sphincter injury (OASI) is a form of maternal trauma secondary to vaginal birth. Women with a history of OASI are deemed to be at a higher risk of recurrence. However, it is unclear if multiparity is associated with higher prevalence. The aim of the study was to test the following hypothesis: the prevalence of external anal sphincter ...
Yanping Li +4 more
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The mechanics of the anal sphincter complex
Journal of Biomechanics, 1988The anal sphincter complex consists of circumferentially arranged muscle fibres, which surround a relatively thick anal lining. This apparatus was modelled mechanistically as two concentric homogeneous isotropic linear elastic cylinders. The inner cylinder (anal lining) was considered to be thick walled, while the outer (the circular muscle) was ...
C P, Gibbons +3 more
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THE ANAL SPHINCTER IN FECAL INCONTINENCE
Pediatrics, 1968Anal sphincter characteristics were studied in eight children who had repair of an imperforate anus. Six of the eight had problems with fecal impaction and soiling. Resting yield pressure (RYP) was measured by gradual distension of a balloon within the sphincter and defined as the point at which a pressure plateau was reached and further distension of ...
J D, Gryboski, H M, Spiro, M, Gelfand
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Internal anal sphincter achalasia
Seminars in Pediatric Surgery, 2009Internal anal sphincter (IAS) achalasia is a clinical condition with presentation similar to Hirschsprung's disease, but with the presence of ganglion cells on rectal suction biopsy. The diagnosis is made by anorectal manometry, which demonstrates the absence of the rectosphincteric reflex on rectal balloon inflation.
Reshma, Doodnath, Prem, Puri
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Internal anal sphincter repair
International Journal of Colorectal Disease, 1997The results of repair to the internal and sphincter alone has been evaluated in five patients with persistent anal incontinence following surgery which affected the internal anal sphincter. All had passive incontinence for solid or liquid stool. Symptoms, anorectal manometry, and anal endosonography were evaluated before and after surgery.
A M, Leroi +4 more
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1981
The classical description of the external sphincter has been of a group of muscle fibres surrounding the anal canal and continuing with the pelvic floor at the edge, puborectalis portion, of the levator ani muscle. Studies have been made of this region by histological sections and by various methods of direct dissection.
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The classical description of the external sphincter has been of a group of muscle fibres surrounding the anal canal and continuing with the pelvic floor at the edge, puborectalis portion, of the levator ani muscle. Studies have been made of this region by histological sections and by various methods of direct dissection.
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The cough response of the anal sphincter
International Journal of Colorectal Disease, 1993Rises in intra-abdominal pressure are common and are accompanied by reflex contraction of the external sphincter. Voluntary contraction of the sphincter is an uncommon event but is routinely used as a measure of sphincter strength. Cough pressure and squeeze pressure were compared in 75 patients using a 4 channel perfused catheter (3 anal and 1 rectal ...
A P, Meagher, D Z, Lubowski, D W, King
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Anal sphincter response to distension
International Journal of Colorectal Disease, 2001Resting anal pressure as determined by manometry is unsuited for assessing the competence of a sphincter. To validate a compliance method of sphincter evaluation we investigated the response of the anal canal to distension. In 20 healthy subjects the anal sphincter was distended using a cylindrical balloon probe subjected to continuous inflation.
M, Bouchoucha +3 more
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