dataset for research article "Small Preoperative Dural Sac Cross-Sectional Area and Anteriorly Placed Fusion Cages Are Risk Factors for Indirect Decompression Failure after Oblique Lateral Interbody Fusion (OLIF)"

A retrospective review was conducted on patients who underwent OLIF procedure performed by three different surgeons with or without posterior instrumentation from February 2015 to December 2019 with at least 1-year follow-up at a tertiary referral spine centre. 92 patients (188 levels) were included in this study. As potential explanatory variables, age, gender, body mass index (BMI), operating level, preoperative clinical diagnosis, number of levels fused, supplementary fixation, and reoperations were recorded. Standing anteroposterior and lateral radiographs, and T2-weighted magnetic resonance imaging (MRI) scans were obtained preoperatively and immediate postoperatively. Cages with different height and different position were compared for radiographic results. Indirect decompression failure (IDF) is defined as revision surgeries within 6 months or persistent compressive symptoms 6 months after the surgery. Univariate and multivariate logistic regression were used to determine the significance of contributors to indirect decompression failure. Demographic factors, including, age, sex, BMI, smoking, drinking, surgical levels, preoperative diagnosis, multi-level surgery and postoperative segmental instability, and preoperative radiographic parameters were analyzed in univariate analysis. Factors with a p-value of <0.2 for indirect decompression failure in the univariate analysis were included in the multivariate analysis