Grade | Criteria |
---|---|
Grading osteoarthritis of the facet joints | |
0 | Normal facet joint space (2 ± 4 mm width) |
1 | Narrowing of the facet joint space (< 2 mm) and/or small osteophytes and/or mild hypertrophy of the articular process |
2 | Narrowing of the facet joint space and/or moderate osteophytes and/or moderate hypertrophy of the articular process and/or mild subarticular bone erosions |
3 | Narrowing of the facet joint space and/or large osteophytes and/or severe hypertrophy of the articular process and/or severe subarticular bone erosions and/or subchondral cysts |
Direction of the formation of anterior lumbar vertebral osteophytes | |
A | No osteophytes |
B | The pair of osteophytes extended in the direction of the adjacent disc |
C | Almost complete bone bridge formation by a pair of osteophytes across the intervertebral disc space |
D | The pair of osteophytes extended in a direction away from the adjacent disc |
E | The osteophytes extended nearly horizontally to the vertebral body border without closing the intervertebral disc space |
F | Ungroupable |