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[Retracted]  Minimally Invasive Unilateral vs. Bilateral Pedicle Screw Fixation and Lumbar Interbody Fusion in Treatment of Multi-Segment Lumbar Degenerative Disorders

Xiaoyang Liu, Guangrun Li, Jiefeng Wang, Heqing Zhang

Department of Spine Surgery, Yuhuangding Hospital, Yantai, Shandong, China (mainland)

Med Sci Monit 2015; 21:3652-3657

DOI: 10.12659/MSM.894890

Available online:

Published: 2015-11-25

BACKGROUND: The choice for instrumentation with minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) in treatment of degenerative lumbar disorders (DLD) remains controversial. The goal of this study was to investigate clinical outcomes in consecutive patients with multi-segment DLD treated with unilateral pedicle screw (UPS) vs. bilateral pedicle screw (BPS) instrumented TLIF.
MATERIAL AND METHODS: Eighty-four consecutive patients who had multi-level MIS-TLIF were retrospectively reviewed. All data were collected to compare the clinical outcomes between the 2 groups.
RESULTS: Both groups showed similar clinical function scores in VAS and ODI. The two groups differed significantly in operative time (P<0.001), blood loss (P<0.001), and fusion rate (P=0.043), respectively.
CONCLUSIONS: This study demonstrated similar clinical outcomes between UPS fixation and BPS procedure after MIS-TLIF for multi-level DLD. Moreover, UPS technique was superior in operative time and blood loss, but represented lower fusion rate than the BPS construct did.

Keywords: Retracted Publication