Basques BA, et al. - From January 2008 to December 2015, 467 subjects were assessed to estimate the clinical and radiographic consequences after anterior cervical decompression and fusion among obese vs non-obese subjects. Researchers identified 97 candidates as normal weight, 157 as overweight, 81 with Class I obesity, 45 with Class II obesity, and 19 with Class III obesity. They reported relation of an increase in body mass index (BMI) with an incline in postoperative SVA along with significantly larger SVA in immediate postoperative and final follow-up radiographs for subjects with BMI ≥30 kg/m² vs BMI <30 kg/m², despite having similar sagittal vertical axis (SVA) measurements on preoperative radiographs. They also noted an association of greater BMI with lower final VAS neck scores. They recorded higher radiographic early adjacent segment degeneration (ASD) rates in subjects BMI ≥30 kg/m² vs BMI <30 kg/m².