Fig. 3

IL-1β and IL-6 expression in ACL-deficient knees. a and b Quantitative IL-1β and IL-6 mRNA expression in normal chondrocytes and chondrocytes from patients with ACL rupture (Error bars = standard errors, * p < 0.05). c and d Quantitative IL-1β and IL-6 mRNA expression in chondrocytes from patients with more than 10 months ACL injury compared to those that underwent surgery within the first 10 months after injury and normal chondrocytes (Error bars = standard errors, * p < 0.05). e Quantitative IL-1β and IL-6 mRNA expression in chondrocytes from patient with ACL rupture up to 12 months (group A: 1–4 months, group B: 5–8 months, and group C: 9–12 months