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Table 1 Kellgren-Lawrence grading scale [15]

From: The correlation of radiographic findings and patient symptomatology in cervical degenerative joint disease: a cross-sectional study

Grade 0 No signs of degenerative disc disease
Grade 1 Minimal anterior osteophytes
Grade 2 Definite anterior osteophytosis with possible narrowing of the disc space and some sclerosis of vertebral plates
Grade 3 Moderate narrowing of the disc space with definite sclerosis of vertebral plates and osteophytes
Grade 4 Severe narrowing of the disc space with definite sclerosis of vertebral plates and multiple large osteophytes