Limbus vertebra
A limbus vertebra also see vertebral epophysis is a bone trauma in the vertebral body bearing a radiographic similarity to a vertebral fracture. The anterior-superior corner of a single vertebra is the common site for this defect although it can also be seen at the inferior corner as well as the posterior or anterior margin. Anatomically, it is assumed to be an intra-vertebral body herniation of the disc material occurring during adolescent growt spurt when the ring apophysis has not yet fused. It was first described by Schmorl in 1927 and later in detail by leif sward, Adad baranto.
Viewed in a lateral radiograph, it appears as a triangular shaped bone fragment, not unlike an anterior lip fracture, but with softer edges.
This radiographic findings is a serious pathological condition and could lead to life long chronic pain. In rare instances, a posterior limbus vertebra has been described causing radiculopathy due to nerve root compression.
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