Fig 1. Assessment of the x-ray features of lumbar disc degeneration—lateral x-ray of lumbar spine.
Arrows—A–no disc space narrowing/anterior osteophyte (grade 0 lumbar disc degeneration), B–mild disc space narrowing and small anterior osteophyte (grade 1 lumbar disc degeneration), C–small anterior osteophyte and moderate disc space narrowing (grade 2 lumbar disc degeneration) [3].