:Intergluteal cleft

{{Short description|Crack between buttocks}}

{{Use dmy dates|date=January 2024}}

{{Infobox anatomy

|name=Intergluteal cleft

|Latin=crena analis or crena interglutealis

|image=Intergluteal cleft.png

|caption=Male

|Image2=Nude Female Buttocks 1.png|Caption2=Female}}

The intergluteal cleft or just gluteal cleft, also known by a number of synonyms, including natal cleft and cluneal cleft, is the groove between the buttocks that runs from just below the sacrum to the perineum,{{Cite web|url=https://enacademic.com/searchall.php?SWord=intergluteal+cleft&from=xx&to=en&did=medicine&stype=|title=Intergluteal cleft|access-date=15 July 2019}} so named because it forms the visible border between the external rounded protrusions of the gluteus maximus muscles. Other names are the anal cleft, crena analis, crena interglutealis, and rima ani. Colloquially, the intergluteal cleft is known as bum crack (UK) or butt crack (US). The intergluteal cleft is located superior to the anus.

There are several disorders that can affect the intergluteal cleft including inverse psoriasis,{{Cite book|title=Andrews' Diseases Of The Skin: Clinical Dermatology|url=https://archive.org/details/andrewsdiseasess00mdwi_659|url-access=limited|last1=James|first1=William D.|last2=Berger|first2=Timothy G.|last3=Elston|first3=Dirk M.|publisher=Saunders|year=2005|edition=Tenth|isbn=978-0-7216-2921-6|page=[https://archive.org/details/andrewsdiseasess00mdwi_659/page/n203 193]}}{{Citation|last1=Tosti|first1=Antonella|title=Chapter 11 - Dermatological Diseases|date=1 January 2005|url=http://www.sciencedirect.com/science/article/pii/B9781416023562500177|work=Nails (Third Edition)|pages=105–121|editor-last=Scher|editor-first=Richard K|place=Edinburgh|publisher=W.B. Saunders|language=en|doi=10.1016/b978-141602356-2.50017-7|isbn=978-1-4160-2356-2|access-date=3 November 2020|last2=Piraccini|first2=Bianca M|editor2-last=Tosti|editor2-first=Antonella|editor3-last=Elewski|editor3-first=Boni E|editor4-last=Daniel|editor4-first=C Ralph}} caudal regression syndrome,{{cite journal|title=Surgical Correction of Spinopelvic Instability in Children With Caudal Regression Syndrome|year=2019 |doi=10.1177/2192568218779984|pmc=6542167|last1=Vissarionov |first1=Sergei |last2=Schroder |first2=Josh E. |last3=Kokushin |first3=Dmitrii |last4=Murashko |first4=Vladislav |last5=Belianchikov |first5=Sergei |last6=Kaplan |first6=Leon |journal=Global Spine Journal |volume=9 |issue=3 |pages=260–265 |pmid=31192092 }} and pilonidal disease.