Fig. 2From: Oblique lateral internal fusion combined with percutaneous pedicle screw fixation in severe lumbar spinal stenosis: clinical and radiographic outcomeA typical case of OLIF. A, B The preoperative anteroposterior and lateral radiographs demonstrate Grade 1 spondylolisthesis at L4/5. E, F The preoperative sagittal and coronal MRI shows severe central stenosis (Schizas Grade D) at L4/5. C, D The postoperative anteroposterior and lateral radiographs one day after OLIF. G, H The preoperative sagittal and coronal MRI showed (Schizas Grade B) at L4/5Back to article page