The line between two buttocks is officially known as the intergluteal cleft.
This anatomical feature is a prominent and deep midline groove located in the gluteal region, serving as a distinct separator for the two glutes and, by extension, the buttocks themselves. It extends downwards, starting from around the third or fourth sacral spine, becoming deeper as it descends inferiorly.
Understanding the Intergluteal Cleft
The intergluteal cleft is a crucial anatomical landmark, often recognized by several different names, both formal and informal. Its primary function is to define the division between the two prominent fleshy masses of the buttocks.
Here's a breakdown of its key characteristics:
- Location: Posterior deep midline groove in the gluteal region.
- Separation: Divides the two glutes (gluteus maximus muscles) and the buttocks.
- Extension: Originates near the third or fourth sacral spine and deepens as it extends downward.
Common Names for the Intergluteal Cleft
While "intergluteal cleft" is the precise anatomical term, this groove is known by several other names in medical contexts and everyday language.
| Term | Description |
|---|---|
| Intergluteal Cleft | The primary and most accurate anatomical term for the deep midline groove separating the buttocks. |
| Gluteal Cleft | A common and widely accepted alternative anatomical term, often used interchangeably with intergluteal cleft. |
| Natal Cleft | Another anatomical term, frequently used in medical and developmental contexts, particularly when discussing congenital conditions or variations. |
| Cluneal Cleft | A less common, but valid, anatomical synonym derived from "clunis," the Latin word for buttocks. |
| Butt Crack | The most common and informal colloquial term used to refer to the intergluteal cleft in everyday conversation. |
Understanding these various terms provides a comprehensive view of how this anatomical feature is referenced in different situations, from formal medical discussions to casual interactions.
