Figure 6

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Nomenclature and Classification of Lumbar Disc Pathology

(Figure 6)

For classification purposes, the intervertebral disc is considered as a two dimensional round or oval structure having four 90° quadrants. By convention, a herniation is a "localized" process involving less than 50% (180°) of the disc circumference.

Introduction

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