title: Riddle of the sphincters in anal fissure.
authors.forename: W H
authors.initials: WH
authors.lastname: Jost
authors.forename: K
authors.initials: K
authors.lastname: Schimrigk
authors.forename: H
authors.initials: H
authors.lastname: Mlitz
mesh_terms: D000293:Adolescent; D000328:Adult; D001003:Anal Canal / Q000503:physiopathology*; D001004:Anus Diseases / Q000150:complications / Q000503:physiopathology; D004576:Electromyography; D005260:Female; D005401:Fissure in Ano / Q000209:etiology*; D006801:Humans; D008297:Male; D008365:Manometry; D008875:Middle Aged; D009122:Muscle Hypertonia / Q000150:complications* / Q000503:physiopathology