Stephen J. Schueler, M.D.

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Sacrum Injury Anatomy

To better understand sacrococcygeal injury. it helps to understand the anatomy of the sacrum and coccyx.

The coccyx, or tailbone, is the lowest part of the spine. The sacrum is a triangular shaped bone that lies between the lumbar vertebrae and the coccyx. Both sides of the sacrum attach the pelvis.

The spine is made up of many parts. It is supported by an upright row of stacked spine bones, called vertebrae. This column of bone starts under the skull and continues to the buttocks. The vertebrae have flexible joints, but the sacrum does not.

Anatomy examples:

  • Bones and ligaments of the pelvis
  • Sacrum and coccyx
  • Sacroiliac joint of the pelvis

Last Updated: Nov 3, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Sacrum Injury References
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  2. Rugulies R, Krause N. Job strain, iso-strain, and the incidence of low back and neck injuries. A 7.5-year prospective study of San Francisco transit operators. Soc Sci Med. 2005 Jul;61(1):27-39. [1584795]
  3. Tveito TH, Hysing M, Eriksen HR. Low back pain interventions at the workplace: a systematic literature review. Occup Med (Lond). 2004 Jan;54(1):3-13. [14963248]
  4. van der Roer N, Goossens ME, Evers SM, van Tulder MW. What is the most cost-effective treatment for patients with low back pain? A systematic review. Best Pract Res Clin Rheumatol. 2005 Aug;19(4):671-84. [15949783]
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