Fig. 2From: Distribution and imaging characteristics of spina bifida occulta in young people with low back pain: a retrospective cross-sectional studya The left lamina grows obliquely upward and the right lamina grows obliquely downward. Although both laminae reach the midline, they cannot meet each other. b The schematic diagram. c Only the end of the right lamina can be seen, the end of the left lamina is blocked by the right side, and the two lamina overlap, resulting in the inability to meet. d The schematic diagramBack to article page