Table 3 Comparison of MRI femorotibial cartilage thickness measurements in AS patients and controls

Total cartilage thickness at femoral condyle (mm)

1.89 ± 0.23 (1.50–2.70)

2.11 ± 0.32 (1.70–2.90)

0.03*

Total cartilage thickness at tibial condyle (mm)

2.03 ± 0.11 (1.80–2.20)

2.19 ± 0.28 (3.10–5.00)

0.02*

Total femorotibial cartilage thickness (mm)

1.94 ± 0.14 (1.80–2.40)

2.15 ± 0.29 (1.80–2.90)

0.01*