The superior lumbar triangle is a region of the body that is bounded by several muscles and the iliac crest. The spelling of this word can be explained using IPA phonetic transcription. The first part, superior, is pronounced /suːˈpɪərɪə/. The second part, lumbar, is pronounced /ˈlʌmbə/. And the last part, triangle, is pronounced /ˈtraɪæŋɡəl/. When combined, the word is pronounced /suːˈpɪərɪə ˈlʌmbər ˈtraɪæŋɡəl/, with the emphasis on the second syllable of "superior" and the first syllable of "lumbar".
The superior lumbar triangle is a term used in anatomy to describe a specific anatomical region located in the lower back. It is formed by the boundaries of several important structures in this area. The superior lumbar triangle is defined by the external oblique muscle anteriorly, the latissimus dorsi muscle posteriorly, and the iliac crest inferiorly.
This triangular space is relevant in medical practice as it serves as a gateway for surgical access to the flank region. It is of particular significance in procedures such as lumbar hernia repair. The superior lumbar triangle provides a distinct landmark for surgeons to locate and access specific structures within the abdominal cavity.
The superior lumbar triangle can vary in size and shape, but it is generally characterized by its triangular appearance. The boundaries formed by the external oblique muscle, latissimus dorsi muscle, and iliac crest create a well-defined region that can be easily identified during physical examination or imaging studies.
Understanding the anatomy of the superior lumbar triangle is essential for healthcare professionals who require knowledge of the lower back and abdominal wall structures. Its recognition allows for accurate diagnoses, appropriate surgical planning, and successful outcomes in procedures involving this region.
A space bounded by the external oblique muscle anteriorly, the iliocostal posteriorly, the serratus posticus inferior and end of the twelfth rib above, and the internal oblique below.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.