What is the WBB staging system for osteosarcoma?

Updated: Jul 01, 2020
  • Author: Charles T Mehlman, DO, MPH; Chief Editor: Omohodion (Odion) Binitie, MD  more...
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First introduced in 1996, the WBB system focuses on the general anatomic location about the spine (conceptualizing a spinal segment as if it were the face of a clock), as well as the specific anatomic location about the spine (eg, extraosseous soft-tissue extension into muscular areas vs intradural extraosseous extension). [27, 28] Just as spinal anatomy is complex, the WBB staging system is complex, but its use is slowly increasing.

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