Individual radiographic features on lumbar spine film.
| Grade | Anterior Osteophyte | Lateral Osteophyte | Disc Narrowing |
|---|---|---|---|
| 0 | None | None | None |
| 1 | Moderate | Moderate | < 50% |
| 2 | Severe and thin and/or thin with intervertebral bridge | Severe and thin and/or thin with intervertebral bridge | ≥ 50% to < 80% |
| 3 | Severe and large and/or large with intervertebral bridge | Severe and large and/or large with intervertebral bridge | ≥ 80% |