Table 6.
Cross-tab analysis between sarcopenia and the K/L grade of knee joints
| Variable | SMI classification |
Total | |
|---|---|---|---|
| Normal | Sarcopenia | ||
| Total | 259 (79.2) | 68 (20.8) | 327 (100) |
| Radiological non-OA | 164 (50.2) | 23 (7.0) | 187 (57.2) |
| Residual | 15.9 | –15.9 | |
| K/L grade 0 | 107 (32.7) | 14 (4.3) | 121 (37.0) |
| Residual | 11.2 | –11.2 | |
| K/L grade 1 | 57 (17.4) | 9 (2.8) | 66 (20.2) |
| Residual | 4.7 | –4.7 | |
| Radiological OA | 95 (29.1) | 45 (13.7) | 140 (42.8) |
| Residual | –15.9 | 15.9 | |
| K/L grade 2 | 52 (15.9) | 17 (5.2) | 69 (21.1) |
| Residual | –2.7 | 2.7 | |
| K/L grade 3 | 33 (10.1) | 17 (5.2) | 50 (15.3) |
| Residual | –6.6 | 6.6 | |
| K/L grade 4 | 10 (3.1) | 11 (3.3) | 21 (6.4) |
| Residual | –6.6 | 6.6 | |
Values are presented as number (%).
K/L grade, Kellgren-Lawrence grade; SMI, skeletal muscle mass index; OA, osteoarthritis.