Table 2.
Correlation of ultrasound findings with visual analog scale and Western Ontario and McMaster Universities Arthritis score
| Variables | Distribution, n (%) | VAS, mean±SD | WOMAC, mean±SD |
|---|---|---|---|
| Medial meniscus extrusion | |||
| Yes | 57 (67.1) | 6.53±1.44 | 64.58±10.49 |
| No | 26 (30.6) | 5.58±1.21 | 56.42±9.16 |
| Not visualized | 2 (2.4) | 8±1.41 | 80±2.83 |
| ANOVA test | 5.89 | 9.01 | |
| P | 0.004* | <0.01* | |
| Lateral meniscus extrusion | |||
| Yes | 43 (50.6) | 6.44±1.32 | 63.37±9.09 |
| No | 42 (49.4) | 6.10±1.57 | 61.50±12.64 |
| T-test | 1.22 | 0.62 | |
| P | 0.27 | 0.43 | |
| Effusion | |||
| Yes | 44 (51.8) | 6.75±1.16 | 65.86±9.13 |
| No | 41 (48.2) | 5.76±1.56 | 58.78±11.67 |
| T-test | 11.17 | 9.79 | |
| P | 0.001* | 0.002* | |
| Medial trochlear cartilage | |||
| Grade 1 | 2 (2.4) | 4±0.71 | 46.50±2.12 |
| Grade 2A | 20 (23.5) | 5.15±1.23 | 54.20±9.56 |
| Grade 2B | 34 (40) | 6.32±1.29 | 62.76±9.09 |
| Grade 3 | 29 (34.1) | 7.14±1.13 | 68.86±9.57 |
| ANOVA test | 12.96 | 11.78 | |
| P | <0.01* | <0.01* | |
| Lateral trochlear cartilage | |||
| Grade1 | 6 (7.1) | 4.67±1.63 | 50.17±8.91 |
| Grade 2A | 34 (40) | 5.97±1.34 | 59.71±10.06 |
| Grade 2B | 43 (50.6) | 6.63±1.29 | 65.74±10.19 |
| Grade 3 | 2 (2.4) | 8.50±0.71 | 75±7.07 |
| ANOVA test | 6.41 | 6.44 | |
| P | 0.001* | 0.001* |
*Statistically significant. VAS: Visual analog scale, WOMAC: Western Ontario and McMaster Universities Arthritis, n: Number of knees, SD: Standard deviation, ANOVA: Analysis of variance