Figure 6.

A case of low-grade spondylolisthesis for which there was intra-observer agreement in five of six observers with respect to the degree of dysplasia. However, the inter-observer agreement in the determination of the degree of dysplasia was poor because three observers classified the case as a type I (low-dysplastic), while the three other observers classified it as a type III (high-dysplastic) spondylolisthesis. Only the lumbosacral region from the original radiographs is provided.