Frequency of patients with ‘positive’ lesions based on different lesion cut-offs (≥1 to ≥5 lesions) for bone marrow oedema (BME) and fatty lesions (FL) in the sacroiliac joints (SIJ) and the spine
| Site and lesion | Cut-off numbers of lesions | |||||
| ≥1 | ≥2 | ≥3 | ≥4 | ≥5 | ||
| SIJ | BME | 136 | 37 | 7 | 3 | 1 |
| Spine | BME | 218 | 86 | 38 | 13 | 6 |
| FL | 645 | 500 | 351 | 270 | 185 | |