The Puborectal Muscle and External Anal Sphincter Can Act Independently of each other in Functional Defecation Disorders
نویسندگان
چکیده
منابع مشابه
Myoarchitectural and functional alterations in rabbit external anal sphincter muscle following experimental surgical trauma.
Obstetrical trauma to external anal sphincter (EAS) is extremely common; however, its role in the development of anal incontinence is not clear. We examined the regenerative process and functional impact of experimental surgical trauma to EAS muscle in an animal model. Surgical myotomy, a craniocaudal incision extending along the entire length and thickness of the EAS, was performed in rabbits....
متن کاملLength-tension relationship of the external anal sphincter muscle: implications for the anal canal function.
The length at which a muscle operates in vivo (operational length) and the length at which it generates maximal force (optimal length) may be quite different. We studied active and passive length-tension characteristics of external anal sphincter (EAS) in vivo and in vitro to determine the optimal and operational length of rabbit EAS. For the in vitro studies, rings of EAS (n = 4) were prepared...
متن کاملNovel applications of external anal sphincter muscle sarcomere length to enhance the anal canal function.
BACKGROUND Our recent studies show that the external anal sphincter muscle (EAS) operates at a sarcomere length range which is below optimal. In this study, we tested the hypothesis that by surgically increasing sarcomere length and bringing it close to the optimal length, EAS muscle function and anal canal pressure can be enhanced. METHODS Rabbits (n = 25) were anesthetized and subjected to ...
متن کاملpuborectalis and external anal sphincter muscles
The innervation of the puborectalis and external anal sphincter muscles was studied in 32 patients with idiopathic (neurogenic) faecal incontinence, 12 of whom also had complete rectal prolapse, using transcutaneous spinal stimulation, transrectal pudendal nerve stimulation, single fibre EMG, anorectal manometry, and measurement of perineal descent. Fourteen normal subjects served as controls. ...
متن کاملRepeatability of innervation zone identification in the external anal sphincter muscle.
AIMS Knowledge of the distribution of the innervation zones (IZs) of the external anal sphincter (EAS) may be useful for preventing anal sphincter incompetence during vaginal delivery. A method proposed for the automatic estimation of the distribution of IZs of EAS from high-density surface electromyography (EMG) was evaluated for repeatability in continent volunteers. METHODS In 13 healthy f...
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ژورنال
عنوان ژورنال: Advanced Research in Gastroenterology & Hepatology
سال: 2021
ISSN: 2472-6400
DOI: 10.19080/argh.2021.16.555945