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Table 8 Radiography grading (from Dik et al. [9])

From: A longitudinal study on the performance of in vivo methods to determine the osteochondrotic status of young pigs

Grade Classification Bone contour Subchondral bone texture Fragment
0 Normal Rounded Diffuse density Absent
1 Minimal Smoothly flattened Obscure lucency Absent
2 Mild Irregularly flattened Obvious, ill-bordered local lucency Absent
3 Moderate Small, rounded/irregular concavity Obvious, well-bordered local lucency Small fragment(s)
4 Severe Large, rounded/irregular concavity Obvious, well-defined extensive lucency Large fragment(s)