Incidence of Surgical Site Infection Following Lateral Lumbar Interbody Fusion Compared With Posterior/Transforaminal Lumbar Interbody Fusion

Author:

Masuda Soichiro12ORCID,Fukasawa Toshiki23,Takeuchi Masato2,Fujibayashi Shunsuke1,Otsuki Bungo1,Murata Koichi1,Shimizu Takayoshi1,Matsuda Shuichi1,Kawakami Koji2

Affiliation:

1. Department of Orthopedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan

2. Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan

3. Department of Digital Health and Epidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan

Abstract

Study Design. Retrospective cohort study. Objective. The objective of this study was to compare the incidence of surgical site infection (SSI) after lateral lumbar interbody fusion (LLIF) and posterior/transforaminal lumbar interbody fusion (P/TLIF). Summary of Background Data. Previous studies have shown that LLIF can improve neurological symptoms to a comparable degree to P/TLIF. However, data on the risk of SSI after LLIF is lacking compared with P/TLIF. Materials and Methods. The study was conducted under a retrospective cohort design in patients undergoing LLIF or P/TLIF for lumbar degenerative diseases between 2013 and 2020 using a hospital administrative database. We used propensity score overlap weighting to adjust for confounding factors including age, sex, body mass index, comorbidities, number of fusion levels, hospital size, and surgery year. We estimated weighted odds ratios (ORs) and 95% CIs for SSI within 30 days postoperatively. Results. We compared the risk of SSI between 2874 patients who underwent LLIF and 24,245 patients who received P/TLIF Patients who had received LLIF were at significantly less risk of experiencing an SSI compared with those receiving P/TLIF (0.7% vs. 1.2%; weighted OR: 0.57; 95% CI: 0.36 –0.92; P=0.02). As a secondary outcome, patients who had received LLIF had less risk of transfusion (7.8% vs. 11.8%; weighted OR: 0.63; 95% CI:0.54 –0.73; P <0.001). Conclusions. In this large retrospective cohort study of adults undergoing lumbar interbody fusion, LLIF was associated with a significantly lower risk of SSI than P/TLIF. The small, but significantly, decreased risk of SSI associated with LLIF may inform decisions regarding the technical approach for lumbar interbody fusion.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Neurology (clinical),Orthopedics and Sports Medicine

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