Table 1 The grades of facet degeneration according to cervical levels
From: Relationship between facet tropism and facet joint degeneration in the sub-axial cervical spine
C2-C3 | C3-C4 | C4-C5 | C5-C6 | C6-C7 | Total | |
|---|---|---|---|---|---|---|
Grade I (%) | 150 (75) | 163 (81.5) | 162 (81) | 162 (81) | 186 (93) | 823 (82.3) |
Grade II (%) | 35 (17.5) | 30 (15) | 28 (14) | 31 (15.5) | 14 (7) | 138 (13.8) |
Grade III (%) | 15 (7.5) | 7 (3.5) | 10 (5) | 7 (3.5) | 0 (0) | 39 (3.9) |
Degenerated (%) | 50 (25) | 37 (18.5) | 38 (19) | 38 (19) | 14 (7) | 177 (17.7) |
Total (%) | 200 (100) | 200 (100) | 200 (100) | 200 (100) | 200 (100) | 1000 (100) |