PATIENT 4 - Lippincott Williams & Wilkins

This is seen at levels L3–4, L4–5 and L5–S1. HNPs can be classified as central (direct midline protrusion), paracentral (eccentric herniation), lateral (along side of the spine and beyond the margin of the spinal canal), or anterior (anterior margin of the vertebral body). At the level of L3–4, the HNP is central and toward the right. ................
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