Fig. 5From: Severe dysphagia after a posterior cervical spine fusion at the C1–C3 level and its improvement after correction surgery for malalignment: a case reportPlain radiographs after the second operation show an extended alignment of the upper cervical spine region. The post-correction occiput-C2 angle was − 13.7° (a), the C1–C2 angle was − 32° (b) and the craniovertebral junction angle proposed by Takami was decreased to 76° (c)Back to article page