Pronunciation: [sˈakɹə͡l tɹˈa͡ɪaŋɡə͡l] (IPA) 
The correct spelling of "sacral triangle" is /ˈseɪkrəl ˈtraɪæŋɡəl/. The word "sacral" is pronounced with a long "a" sound, as in "say". The "c" in "sacral" is followed by an "r" sound and the "a" is pronounced short, like "uh". Meanwhile, "triangle" is pronounced with a long "i" sound, as in "try", and the "a" is pronounced like "a" in "cat". The word "triangle" ends with a "g" sound and a silent "e".
The sacral triangle is a term that refers to the triangular space located at the base of the spine, specifically in the region of the sacrum. The sacrum is a large, triangular bone situated below the fifth lumbar vertebra and above the coccyx. The triangle is formed by the two posterior superior iliac spines (the bony projections on the back of the pelvis) and the margin of the sacrum.
Anatomically, the sacral triangle is a crucial landmark as it serves as an essential reference point for healthcare professionals, particularly in relation to the identification and examination of important structures in the pelvic region. Due to its shape and location, the sacral triangle provides access to various structures, such as nerves, blood vessels, and muscles.
Surgeons and other medical professionals may utilize the sacral triangle as an entry point during certain surgical procedures, such as sacroiliac joint injections. Additionally, this region is also of clinical significance during the assessment and treatment of certain conditions, including lower back pain, sacroiliac joint dysfunction, and nerve-related symptoms in the lower extremities.
In summary, the sacral triangle is a triangular space at the base of the spine, formed by the posterior superior iliac spines and the sacrum. It serves as an important anatomical landmark for the identification and examination of structures in the pelvic region, and it holds clinical significance in various surgical and therapeutic contexts.
The surface area over the sacrum.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "sacral triangle" is composed of two separate words: "sacral" and "triangle". Here is the etymology of each word:
1. Sacral: The word "sacral" is derived from the Latin word "sacrum", which refers to the triangular-shaped bone located at the base of the spine. In Latin, "sacrum" means "sacred" or "holy". The name likely arose due to the belief that this bone was a sacred part of the body.
2. Triangle: The word "triangle" comes from the Latin word "triangulum", which is a combination of "tri-" meaning "three" and "angulum" meaning "angle". The term refers to a polygon with three sides and three angles, which typically has a triangular shape.
