Table 3.
Comparison of frequencies of cartilage lesions, the cartilage lesion scores and the modified WORMS for the SPGR and T2 sequences for the different K-L grades
| K-L grading scale | MRI sequence | |||
|---|---|---|---|---|
| SPGR | T2 | |||
| K-L1 grade | Cartilage lesion | Frequency | 14/36 (38.89%) | 7/36 (19.44%) |
| Mean ± SD | 1.19 ± 1.92* | 0.39 ± 0.96* | ||
| WORMS | 4.78 ± 4.31* | 4.06 ± 3.79* | ||
| K-L2 grade | Cartilage lesion | Frequency | 21/29 (72.41%) | 17/29 (58.62%) |
| Mean ± SD | 3.21 ± 2.79* | 1.76 ± 2.50* | ||
| WORMS | 8.38 ± 4.95* | 7.00 ± 5.00* | ||
| K-L3 grade | Cartilage lesion | Frequency | 17/19 (89.47%) | 17/19 (89.47%) |
| Mean ± SD | 9.84 ± 5.55* | 6.84 ± 5.04* | ||
| WORMS | 20.16 ± 7.90* | 17.16 ± 7.59* | ||
| Total | Cartilage lesion | Frequency | 52/84 (61.90%) | 41/84 (48.80%) |
| Mean ± SD | 3.85 ± 4.72* | 2.38 ± 3.86* | ||
| WORMS | 9.50 ± 8.11* | 8.04 ± 7.30* | ||
*P < 0.05. WORMS Whole-Organ Magnetic Resonance Imaging Score, SPGR spoiled gradient-recalled, K-L Kellgren-Lawrence, MRI magnetic resonance imaging