Fully Endoscopic Lumbar Laminectomy for Treatment of Large Dorsal Ligamentum Flavum Cyst and Severe Spinal Stenosis: A Technical note on a Case Report

Traditional open and tubular approaches for treatment of central and lateral recess spinal stenosis involve laminotomy or laminectomy with removal of overgrown ligamentum flavum and a portion of the medial facet joints in order to decompress the central canal and lateral recess. Fully-endoscopic posterior lumbar laminectomy follows similar principle but is a more minimally invasive approach with unique advantages. This case presentation describes a step-by-step technique for fully-endoscopic lumbar laminectomy and its unique advantages to achieve bilateral decompression with unilateral approach and en bloc excision of a large dorsal ligmentum flavum cyst.