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Number and percentages with subchondral fracture and eventual bone collapse
| Subchondral Fracture | Collapse | Total | |
|---|---|---|---|
| No | Yes | ||
| No | 28 (90) | 3 (10) | 31 (100) |
| Yes | 2 (13) | 14 (87) | 16 (100) |
| Total | 30 (64) | 17 (36) | 47 (100) |
Note. Data are numbers of lesions with percentages in parentheses
Cochran-Mantel-Haenszel test p < 0.001
Kendall’s tau-b = 0.77
Sensitivity = 82% (57–96%)
Specificity = 93% (78–99%)
