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On vertebral body growth

M Doskocil1, P Valouch, V Pazderka

  • 1Department of Anatomy, First Faculty of Medicine, Charles University, Praha, Czech Republic.

Functional and Developmental Morphology
|January 1, 1993
PubMed
Summary
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Vertebral bodies develop growth plates similar to long bones, but their epiphyses do not ossify. This study clarifies vertebral development and the origin of intervertebral disc components.

Area of Science:

  • Developmental biology
  • Orthopedic research
  • Human anatomy

Background:

  • The developmental origins of vertebral bodies and their relationship with intervertebral discs are not fully understood.
  • Previous research has not clearly defined the cartilaginous structures at the vertebral-disc interface.

Purpose of the Study:

  • To investigate the developmental process of vertebral bodies, focusing on the interface with intervertebral discs.
  • To determine the embryonic origin of the cartilaginous plates between vertebral bodies and intervertebral discs.

Main Methods:

  • Analysis of serial sections from human fetuses (2nd-3rd month intrauterine life).
  • Microscopic examination of preparations from children, adolescents, and young adults.

Main Results:

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  • Cartilaginous plates at the vertebral-disc contact are integral parts of vertebral bodies, not intervertebral discs.
  • Vertebral bodies exhibit growth (epiphyseal) cartilages analogous to long bones during development.
  • Vertebral body epiphyses do not ossify and persist as hyaline cartilage post-growth, unlike other long bones.

Conclusions:

  • Vertebral bodies share developmental and growth characteristics with long bones.
  • The nucleus pulposus is not considered a remnant of the notochord based on these findings.
  • Sacral vertebral segment fusion involves synchondrosis with bipolar physes, without an intervertebral disc primordium.