Abstract:

Objective The treatment of degenerative lumbar spinal stenosis by minimally invasive posteriorspinal decompression and fusion under electron microscope was compared with that of traditional posterior spinaldecompression and fusion. Methods A total of 110 patients with degenerative lumbar spinal stenosis who underwentfusion surgery in our hospital from March 2017 to March 2019 were selected. There were 58 patients who underwentminimally invasive posterior spinal decompression and fusion guided by electron microscope and selected as theminimally invasive group，Other 52 patients who underwent traditional posterior spinal decompression and fusionwere selected as the traditional group. The surgical indicators，postoperative hospital stay，postoperative complica⁃tions，visual analog score（VAS）and Oswestry dysfunction index（ODI）scores of the two groups were comparedand analyzed. The MacNab standard was used at the last postoperative period of follow⁃up to evaluate the clinicaleffects. Results Compared with traditional operation group，the operation time，intraoperative blood loss，surgi⁃cal incision length，postoperative hospital stay，and postoperative complications of the minimally invasive groupwere significantly shorter or less（P < 0.05）. The VAS score and ODI score of the two groups were all significantlyimproved after treatment（P < 0.05）but there was no significant difference in VAS score and ODI score betweentwo groups（P > 0.05）. Conclusion Compared with traditional decompression and fusion，electron microscope⁃guided minimally invasive posterior approach decompression and fusion not only guarantees the curative effect butalso has many advantages for the treatment of degenerative lumbar spinal stenosis. The advantages includes lesstrauma，less bleeding，shorter operative time and hospital stay，and lower postoperative complications. It is worthyof clinical preference.

Key words: degenerative lumbar spinal stenosis, electron microscope, minimally invasive, spinal decompression and fusion