Removal of veebral disc can be done by all these approaches except:
(A) Laminotomy (B) Laminectomy (C) Laminoplasty (D) Hemilaminectomy
(C) Ans: C. Laminoplasty(Ref Maheshwari 5/e p257)Removal of veebral disc can be done by all these approaches except laminoplasty.Laminoplasty:Describes process of increasing available space for spinal cord by laminar arch reconstruction by posterior approach. Methods of Removal of DiscFenestrationThe ligamentum flavum bridging the two adjacent laminae is excised and the spinal canal at the level exposed.LaminotomyIn addition to fenestration, a hole is made in the lamina for wider exposure.Hemi-laminectomyThe whole of the lamina on one side is removedLaminectomyThe laminae on both sides, with the spinous process are removed. Such a wide exposure is required for a big, central disc producing cauda equina syndrome.