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L4-5 Disc Herniation with Laminectomy, Discectomy and Foraminotomy. Features the L4-5 (anomalous L5-6) focal disc herniation showing compression of the right side nerve root.  A.  Incision in lower back to expose the L4-5 (L5-6) disc space; Incision of the lumbosacral spine labeling L4-5, L5-6, ligamentum flavum and lamina; B. Surgical removal of the lamina and ligamentum flavum through the open surgical exposure; C. Removal of the herniated disc material.