World Neurosurg
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To evaluate safety and effectiveness of the application of piezosurgery in en bloc laminectomy for the treatment of multilevel thoracic ossification of ligamentum flavum (MTOLF). ⋯ The application of piezosurgery in en bloc laminectomy is a safe and effective method in the treatment of MTOLF, and it was advantageous for reducing both operation time and intraoperative blood loss compared with the high-speed drill.