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(A) An endoscopic view of ipsilateral laminectomy. spinous process (white arrow), ligamentum flavum (black arrow). (B) Contralateral decompression with Over the top technique. ligamentum flavum (black arrow), dura (white arrow). (C)The schematic view of ‘Over the top technique'., TP transverse process, SP, spinous process, LF, ligamentum flavum.
