case_images: PMC5629866_01
case_images: Patient 1: Computed tomography of the lumbar spine in coronal (left panel, a) and axial (right panel, b) planes that reveal the transitional segments of L5 and pseudoarticulation with the sacral ala
case_images: SNI-8-236-g001.jpg
case_images: PMC5629866_01_SNI-8-236-g001.jpg
case_images: F1
case_images: Imaging studies [computed tomography (CT) and magnetic resonance imaging (MRI)] for both patients revealed anomalous transverse processes at the L5-S1 level and pseudoarticulation with the sacrum, which were consistent with Bertolotti's syndrome [Figure 1].
case_images: Navigation workstation-based localization of the transitional segment after incision and soft tissue dissection
case_images: SNI-8-236-g002.jpg
case_images: PMC5629866_01_SNI-8-236-g002.jpg
case_images: F2
case_images: The O-arm was used to localize the L5-S1 transitional segment [Figure 2].
case_images: O-arm  images obtained prior to (left panel) and after complete resection of the transitional segment (right panel)
case_images: SNI-8-236-g003.jpg
case_images: PMC5629866_01_SNI-8-236-g003.jpg
case_images: F3
case_images: Adequate resection of the anomalous transverse process was confirmed with the O-Arm [Figure 3; right panel].