Figure 3From: Surgical treatment of lumbar spinal stenosis with microdecompression and interspinous distraction device insertion. A case seriesPreoperative (A) and postoperative (B) transverse T2 MRI images at the stenotic level of the same patient shown in Figure2. Unilateral microdecompression and X-STOP insertion was performed. The postoperative increase of the space available for the sac is shown.Back to article page