Fig. 1From: Surgical outcomes between posterior decompression alone and posterior decompression with fusion surgery among patients with Meyerding grade 2 degenerative spondylolisthesis: a multicenter cohort studySelection of participantsIn total, 3863 consecutive patients underwent surgery for DLSS. The clinical outcomes of 2354 (61%) patients 2 years after surgery were assessed. Among them, 1163 who did not meet our criteria and 716 who had multilevel surgery were excluded. Therefore, the radiographic images of the remaining 475 patients were evaluated, and 42 patients were found to have grade 2 DSBack to article page