Table 1 Scoring system of cervical disc and facet joint degeneration. AP = anteroposterior
From: Quantifying cervical spondylosis: reliability testing of a coherent CT-based scoring system
Disc degeneration | ||
|---|---|---|
Height loss | 0% | 0 points |
≤25% | 1 point | |
> 25- ≤50% | 2 points | |
> 50%- ≤ 75% | 3 points | |
> 75% | 4 points | |
Anterior osteophytes | No osteophytes | 0 points |
≤1/8 AP diameter | 1 point | |
> 1/8 - ≤1/4 AP diameter | 2 points | |
> 1/4 AP diameter | 3 points | |
Endplate sclerosis | No sclerosis | 0 points |
Detectable | 1 point | |
Definite | 2 points | |
Overall degree of disc degeneration 1 + 2 + 3 | 0 points (no degeneration) | 0 points |
1–3 points (mild degeneration) | 1 point | |
4–6 points (moderate degeneration) | 2 points | |
7–9 points (severe degeneration) | 3 points | |
Facet joint degeneration | ||
Joint space narrowing | Normal | 0 points |
Narrowed | 1 point | |
Osteophytes | No osteophytes | 0 points |
Yes | 1 point | |
Irregularity of articular surface | Normal | 0 points |
Irregular | 1 point | |
Overall degree of facet joint degeneration (1 + 2 + 3) | 0 points (no degeneration) | 0 points |
1 point (mild degeneration) | 1 point | |
2 points (moderate degeneration) | 2 points | |
3 points (severe degeneration) | 3 points | |