Impact of Body Mass Index on Adjacent Segment Disease After Lumbar Fusion for XXXX .

@entity1 @entity1347 @entity179
BACKGROUND:: @entity1347 is an important complication after fusion of @entity179 . However, the role of body mass index (BMI) in @entity1347 has been addressed less. OBJECTIVE:: To examine the relationship between BMI and @entity1347 after lumbar fusion for @entity179 . METHODS:: For this retrospective study, we enrolled 190 @entity1 undergoing lumbar fusion surgery for degeneration. BMI at admission was documented. @entity1347 was defined by integration of the clinical presentations and radiographic criteria based on the morphology of the dural sac on magnetic resonance images. RESULTS:: @entity1347 was identified in 13 of the 190 @entity1 , accounting for 6.8%. The interval between surgery and diagnosis as @entity1347 ranged from 21 to 66 months. Five of the 13 @entity1 required subsequent surgical intervention for clinically relevant @entity1347 . In the logistic regression model, BMI was a risk factor for @entity1347 after lumbar fusion for @entity179 (odds ratio, 1.68; 95% confidence interval, 1.27-2.21; P < .001). Any increase of 1 mean value in BMI would increase the @entity1347 rate by 67.6%. The @entity1 were subdivided into 2 groups based on BMI, and up to 11.9% of @entity1 with BMI >= 25 kg/m were diagnosed as having @entity1347 at the last follow-up. CONCLUSION:: BMI is a risk factor for @entity1347 in @entity1 undergoing lumbar fusion for @entity179 . Because BMI is clinically objective and modifiable, controlling body weight before or after surgery may provide opportunities to reduce the rate of @entity1347 and to improve the outcome of fusion surgery. ABBREVIATIONS:: ASD, adjacent segment diseaseBMI, body mass indexPLF, posterolateral lumbar fusionPLIF, posterior lumbar interbody fusionTLIF, transforaminal lumbar interbody fusion.
