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Table 1 Grades of disc degeneration in the total study population

From: Correlation between multifidus fatty atrophy and lumbar disc degeneration in low back pain

Pfirrmann Grade L4/L5 L5/S1 Total Discs %
I 2 1 3 4.3
II 8 7 15 21.4
III 18 11 29 41.4
IV 5 13 18 25.7
V 2 3 5 7.2