PT - JOURNAL ARTICLE AU - Nierengarten, Mary Beth ED - Dingjun, Hao TI - Position of Pedicle Screws during Lumbar Fusion Surgery Significant in Reducing Complications DP - 2015 Feb 01 TA - MD Conference Express PG - 17--17 VI - 14 IP - 50 4099 - http://mdc.sagepub.com/content/14/50/17.short 4100 - http://mdc.sagepub.com/content/14/50/17.full AB - This article presents the results of a prospective comparative study—Effect of Superior Adjacent Segment Degeneration after Lumbar Posterolateral Fusion Using Two Different Pedicle Screw Insertion Positions With Nine-Year Minimum Follow-Up—of patients with low-grade isthmic spondylolisthesis, which assessed the effect of different pedicle screw insertion positions on adjacent segment degeneration.