Intraobserver reproducibility of JSW and osteophyte, using the −3 to +3, −4 to +4, and −5 to +5 LDA, calculated by weighted κ
| Radiographic features | −3 to +3 LDA | −4 to +4 LDA | −5 to +5 LDA |
|---|---|---|---|
| 95% confidence intervals are in brackets. | |||
| Medial tibiofemoral JSW | 0.88 (±0.07) | 0.86 (±0.07) | 0.87 (±0.07) |
| Lateral tibiofemoral JSW | 0.83 (±0.07) | 0.81 (±0.07) | 0.81 (±0.07) |
| Medial patellofemoral JSW | 0.88 (±0.07) | 0.86 (±0.07) | 0.86 (±0.07) |
| Lateral patellofemoral JSW | 0.87 (±0.08) | 0.88 (±0.09) | 0.88 (±0.08) |
| Average of all compartments | 0.87 | 0.85 | 0.86 |
| Medial femoral osteophyte | 0.74 (±0.09) | 0.78 (±0.09) | 0.77 (±0.09) |
| Lateral femoral osteophyte | 0.71 (±0.09) | 0.72 (±0.09) | 0.71 (±0.09) |
| Medial tibial osteophyte | 0.81 (±0.09) | 0.82 (±0.09) | 0.82 (±0.09) |
| Lateral tibial osteophyte | 0.79 (±0.09) | 0.82 (±0.09) | 0.84 (±0.09) |
| Medial patellar osteophyte | 0.76 (±0.09) | 0.76 (±0.09) | 0.78 (±0.08) |
| Lateral patellar osteophyte | 0.76 (±0.09) | 0.76 (±0.09) | 0.73 (±0.08) |
| Medial trochlear osteophyte | 0.82 (±0.09) | 0.79 (±0.09) | 0.80 (±0.09) |
| Lateral trochlear osteophyte | 0.79 (±0.09) | 0.79 (±0.09) | 0.84 (±0.09) |
| Average of all osteophyte sites | 0.77 | 0.78 | 0.79 |