Objective To investigate the relationship between spinal adiposity index(SAI)and deep surgical site infection(DS-SI)after lumbar posterior instrumentation fusion.Methods 31 patients with deep SSI(DSSI)after lumbar posterior instrumentation fusion in our hospital from January 2018 to December 2020 were selected as the study group while 93 patients without DSSI after lumbar posterior instrumentation fusion in our hospital in the same period were selected as the control group according to the ratio of 3:1.The subcutaneous fat thickness and Sai of the patients were measured on T2 weighted MRI images in the midsagittal position of the lumbar spine,and the differences of subcutaneous fat thickness and Sai between the two groups were observed.The relationship between Sai and DSSI was observed after multivariate logistic balance of other clinical data.Results The subcutaneous fat thickness and Sai in the study group were significantly higher than those in the control group(P＜0.05).There were significant differences in gender,age BMI,smoking,diabetes,ASA classification,preoperative steroids,preoperative immunosuppressive agents,history of non-surgical in-fection,operative section,operative time,bleeding volume and postoperative drainage time between the study group and the control group(P＜0.05).Multivariate logistic analysis showed that Sai ≥ 0.45,age ≥ 75 years,ASA＞grade 2,postoperative drainage tube time＞3 d and surgical segment＞2 segments were the risk factors of DSSI(P＜0.05).Conclusion Sai is a risk factor for DSSI after posterior lumbar instrumentation fusion,and its measurement is simple and can be used for preoperative risk stratification.
关键词
腰椎后路内固定术/深部手术部位感染/脊柱脂肪指数/核磁共振/风险因素
Key words
Posterior Lumbar Internal Fixation/Deep Surgical Site Infection/Spinal Fat Index/Nuclear Magnetic Resonance/Risk Factor
维普
万方数据