Figure 1From: The effect of growth on the correlation between the spinal and rib cage deformity: implications on idiopathic scoliosis pathogenesisA drawing of a lateral spinal radiograph describing the rib-index. The rib-index is the ratio d1/d2. d1 is the distance between the posterior margin of the vertebral body and the most extended point of the most projecting rib contour. d2 is the distance between the posterior margin of the same vertebral body and the most protruding point of the least projecting rib contour.Back to article page