|
The modified "New-York-Criteria" [1,5]. |
| Clinical Criteria: |
| Lower back pain and stiffness for more than 3 months with improvement after exercise, but not with rest |
| Reduced motility of the lumbar spine in the sagittal and frontal axis |
| Restriction of the chest expansion (age and gender related) |
|
|
| Radiological Criteria: |
| Sacroiliitis at least grade 2 bilateral or grade 3–4 ipsilateral |
Heyde et al. Patient Safety in Surgery 2008 2:15 doi:10.1186/1754-9493-2-15 |