Figure 1From: Autologous chondrocyte implantation (ACI) for the treatment of large and complex cartilage lesions of the knee Patients were divided into 3 groups: single lesions (n = 23), complex lesions (n = 19), and kissing lesions (n = 9) at surgery (Tx) and at follow-up. Values are reported as mean+/-standard deviation with * indicating statistically relevant changes.Back to article page