Characteristics of the participants according to the presence or absence of central bone marrow lesions (BML) on knee magnetic resonance imaging.
| Among BML Cases, n = 100 | Among BML Controls, n = 100 | |
|---|---|---|
| Age, mean (SD), yrs | 69 (9) | 68 (9) |
| Body mass index, mean (SD) | 29.7 (5) | 29 (6) |
| Maximal K–L grade*, % | ||
| 0–1 | 33 | 75 |
| 2 | 15 | 10 |
| 3 | 21 | 12 |
| 4 | 31 | 3 |
| Diabetes, % | 11 | 14 |
↵* One control had K–L grade missing. K–L: Kellgren-Lawrence grade.