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Chapter 75 

Chapter 75
Chapter 75

Brandon C. Perry

and Kathleen R. Fink

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date: 29 June 2022

Limbus vertebra is a common incidental finding in adults. It is thought to be due to remote injury in the skeletally immature spine, in which a portion of the nucleus pulposus herniates underneath the unfused ring apophysis. This apophysis fragment remains separated from the vertebral body, developing into a well-corticated, triangular osseous fragment. This fragment is usually located in the anteriosuperior corner of a mid-lumbar vertebral body, though limbus can occur elsewhere in the spine. Rarely, it can affect the inferior or posterior vertebral body margin.

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