Fig. 4

Representative medical images for eggshell procedure. a Preoperative MRI scan showed that there was disc herniation in T9/10 level, and the dura mater was oppressed. b Preoperative sagittal CT scan showed that there was T9/10 disc herniation with calcification. c Preoperative axial CT scan showed that there was T9/10 disc herniation associated with calcification. d Postoperative X-ray showed that the internal fixation was good, and there was intervertebral bone grafting. e, f The postoperative sagittal and axial CT scan showed that the sclerosing herniated disc was removed completely with decompression at 360°