Stephen J. Schueler, M.D.

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Polyostotic Fibrous Dysplasia Anatomy

To better understand fibrous dysplasia, it helps to understand the anatomy of the skeleton and bone

The bony skeleton is a living structure that supports the entire body. Bone made up of an outer shell of cortical, or very dense, bone that surrounds a honeycomb-like structure of softer (cancellous) bone. Bone mainly consists of protein and calcium. Without calcium, bone will become weak.

The human skeleton can be divided into two sections:

  • Axial skeleton: a total of 80 bones including the skull, spine, and chest
  • Appendicular skeleton: a total of 126 bones including the pelvic girdle, limbs, feet and hands

Anatomy examples:
  • Internal structure of bone
  • The pelvic girdle
  • The chest
  • The skull
  • The spine
  • Skeletal system
  • Hands and wrists
  • Feet

Last Updated: Nov 3, 2008 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Polyostotic Fibrous Dysplasia References
  1. DiCaprio MR, Enneking WF. Fibrous dysplasia. Pathophysiology, evaluation, and treatment. J Bone Joint Surg Am. 2005 Aug;87(8):1848-64. [16085630]
  2. Ortiz EJ, Isler MH, Navia JE, Canosa R. Pathologic fractures in children. Clin Orthop Relat Res. 2005 Mar;(432):116-26. [15738811]
  3. Parekh SG, Donthineni-Rao R, Ricchetti E, Lackman RD. Fibrous dysplasia. J Am Acad Orthop Surg. 2004 Sep-Oct;12(5):305-13. [15469225]
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