Table 4.
Comparison of X-ray and MRI changes and clinical parameters in no or minimal hip pain group.
| Parameters | Percentage |
|---|---|
| X-ray width less than 3 mm (%) | 44 |
| X-ray width less than 3.85mm (%) | 82 |
| X-ray width less than 4 mm (%) | 88 |
| at least one MRI change(%) | 58 |
| more than one MRI changes(%) | 39 |
| MRI features: | |
| Superficial subchondral BME lesions in the femoral heads (%) | 53 |
| Superficial subchondral BME lesions in the acetabula (%) | 31 |
| Deep subchondral BME lesions in the acetabula(%) | 17 |
| Deep subchondral BME lesions in the femoral heads(%) | 14 |
| BME lesions in trochanters(%) | 22 |
| Cysts in the acetabula(%) | 11 |
| BASDAI ≧4.0(%) | 26 |
| High CRPa(%) | 25 |
| High ESRb(%) | 22 |
BME, bone marrow edema; BASDAI, Bath Ankylosing Spondylitis Disease Activity Index; CRP, C-reactive protein (<0.8 mg/dl); ESR, Erythrocyte Sedimentation Rate (Male<15 mm/h, Female<20 mm/h). aCRP higher than normal; bESR higher than normal.