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Table 5 Evaluation of degree of disc degeneration

From: The correlation between the change of Hounsfield units value and Modic changes in the lumbar vertebral endplate

Degree of degeneration Grade II Grade III Grade IV Grade V
Disc number 2 23 83 50
area ratio of endplate 13.89% ± 2.14% 32.23% ± 15.28% 36.93% ± 16.19% 54.24% ± 18.23%**
area ratio of sagittal 5.60% ± 2.15% 19.66% ± 9.68% 20.44% ± 11.24% 28.14% ± 9.65%**
HU value of endplate 440.30 ± 42.14 544.74 ± 157.17 560.54 ± 161.91 609.58 ± 151.46
  1. **A significantly statistical difference between grade V degeneration and grade III/ IV (p < 0.001)