Fig. 2From: Correlation between intervertebral disc degeneration, paraspinal muscle atrophy, and lumbar facet joints degeneration in patients with lumbar disc herniationExamples of MRIs on T2W axial with Pathria grades 0 to 3 are shown [14]. Four grades of osteoarthritis of the facet joints were defined as: (a) grade 0, normal; (b) grade 1, mild degenerative disease; grade 2, moderate degenerative disease; and (c) grade 3, severe degenerative diseaseBack to article page