Is the Evaluation of Anal Distensibility by Endoflip® Technique Useful for the Diagnosis of Anismus?

Inclusion criteria

• patient older than 18 years
• patient with distal constipation defined according to the Rome IV criteria, for at least 3 months and verified by a transit time study showing a predominant slowing of markers at the recto-sigmoid level.
• patient who read and signed the informed consent form

Exclusion criteria

• Patients with a predominant right of left colonic constipation;
• Pregnant woman or woman with no effective contraception and of childbearing age
• Patient with inflammatory bowel disease, ischemic colitis, history of colon or rectal cancer, infectious colitis or proctologic disease.
• Patient with anorectal malformation
• Patient with an history of pelvic floor radiotherapy
• Patient with a digestive stoma
• Insertion of the probe impossible or painful
• Patient who has participated to a clinical trial within 30 days prior to the inclusion visit
• Patient not understanding or reading French
• Patients under guardianship, curatorship, safeguard of justice
• Patient without liberty by administrative or judicial decision