Figure 5.

Analysis of the correlation between cartilage assessment scores at 20 weeks after treatment and levels of serum WF6 (a) and hyaluronic acid (HA) (b). Correlation analysis was conducted using the Kendall rank correlation coefficient test. Serum WF6 level negatively correlates with the final assessment score (r = -0.69, P < 0.05), and serum HA level tends to positively correlate (r = 0.46, 0.1 <P < 0.05) with the cartilage repair assessment score.