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Table 6 Grading of intervertebral disc calcification (IDC) used internationally

From: Allelic frequency of 12-FGF4RG and the association between the genotype with number of calcified intervertebral discs visible on radiographs in Coton de Tuléar and French Bulldog breeds

 

IDC grade

 

IDC 0

IDC 1

IDC 2

IDC 3

Number of CDVR

0

1 – 2

3 – 4

≥ 5

  1. CDVR calcified discs visible on radiographs; IDC grade intervertebral disc calcification grade (Jensen and Christensen, 2000; Lappalainen et al., 2014); IDC 0 no, IDC 1 mild, IDC 2 moderate, IDC 3 severe intervertebral disc calcification based on number of CDVR