Degenerative disease of the lumbar spine often compromises the life quality of patients. In recent decades, surgical procedures on the lumbar spine have been oriented to reduce risks, costs, and perioperative complications by performing minimally invasive surgeries, specifically anterior lumbar interbody fusion (ALIF) and/or lateral lumbar interbody fusion (LLIF). A large number of studies have evaluated these procedures, but those studies almost exclusively evaluated clinical and radiological outcomes. This study aims to evaluate the safety of intraoperative neurophysiological monitoring (IONM) during indirect decompression of the lumbar canal.