Figure 3

Projected cartilage area ratio (thickness ≥ 1.5 mm) and cartilage thickness at the femoral posteromedial region. The patient number is shown. **p < 0.01 between − 30 weeks and − 1 week.

Projected cartilage area ratio (thickness ≥ 1.5 mm) and cartilage thickness at the femoral posteromedial region. The patient number is shown. **p < 0.01 between − 30 weeks and − 1 week.