https://www.selleckchem.com/products/oul232.html 28 vs. 9.82, P=0.016). All 4 parameters were similar postoperatively and at last follow-up. The ASD group had a greater change in CSA over the follow-up period (-6.26 vs. -1.47, P=0.05), but they achieved similar sagittal alignment at last follow-up. There was no difference in clinical outcomes between the 2 groups. Unlike studies on 1-level and 2-level ACDF, this study found that cervical spinal alignment was not associated with ASD development after 3-level ACDF. ASD development also had no impact on clinical outcomes at 2 years. Level III-nonrandomized cohort study. Level III-nonrandomized cohort study. This was a retrospective observational study. The aim of this study was to evaluate the accuracy of percutaneous pedicle screw placement using augmented reality surgical navigation during minimally invasive transforaminal lumbar interbody fusion (TLIF). Augmented reality-based navigation is a new type of computer-assisted navigation where video cameras are used instead of infrared cameras to track the operated patients and surgical instruments. This technology has not so far been clinically evaluated for percutaneous pedicle screw placement. The study assessed percutaneous pedicle screw placement in 20 consecutive patients who underwent single-level minimally invasive TLIF using augmented reality surgical navigation. Facet joint violation and depression by the inserted pedicle screws were evaluated. Secondary outcome such as radiation dose exposure, fluoroscopy time, and operative time were collected for 3 phases of surgery preparation phase, pedicle screw placement, and decompression with cage placem. Level III. Retrospective. Evaluate the association between comorbidity burden and reaching minimum clinically important difference (MCID) following lumbar decompression (LD). There is limited research on the influence of preoperative comorbidity burden on patient-reported outcome improvement following LD. A prospectiv