Li J, Li H, Zhang N, et al. - A retrospective study was performed to examine the radiographic and clinical outcome of lateral lumbar interbody fusion (LLIF) for extreme lumbar spinal stenosis of Schizas grade D. This radiographic analysis recruited a total of 181 segments from 110 patients who had undergone LLIF between June 2017 and December 2018. Researchers assessed anterior and posterior disc heights, disc angle, foramen height, spinal canal diameter and central canal area on CT and MRI. They enrolled 18 patients with at least one segment of grade D for clinical analysis. Using visual analogue scale and Oswestry disability index scores, clinical outcome was assessed. Continuous variables were correlated applying Student’s t-test, with P-values < 0.05 considered to demonstrate statistically significant differences. The data showed that for Schizas grade D segments, the radiographic decompression impact of LLIF was comparable with that of other grades. There was necessary of posterior decompression was necessary for LLIF to achieve a satisfactory clinical outcome for extreme lumbar spinal stenosis of Schizas grade D.