Figure 4

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Nomenclature and Classification of Lumbar Disc Pathology

(Figure 4)

The term "herniated disc", as defined in this work, refers to localized displacement of nucleus, cartilage, fragmented apophyseal bone, or fragmented anular tissue beyond the intervertebral disc space (disc space, interspace). The interspace is defined, craniad and caudad, by the vertebral body end-plates.. Two intravertebral herniations, one with an upward orientation and the other with a downward orientation with respect to the disc space, are illustrated schematically.

Introduction

Preface	Introduction	Recommendations	Discussion (part 1)
Discussion (part 2)	Glossary	References	Appendix