Fig. 4

A Postoperative 3D reconstruction showed the location of the working channel. Compared with the preoperative CT (Fig. 2A), the postoperative CT (sagittal) (B) revealed that the OLF was completely removed. Computed tomography of the thoracic spinal cord showed that adequate decompression was performed. A Preoperative CT (axial). B Postoperative CT (axial)