The mosaicplasty as a method for solving the deep chondral defects is a one-stage technology with autogenous osteochondral graft application. The small cylinder's forming graft are obtained from a nonweightbearing site of knee cartilage and graft is further applied by press-fit technique to former prepared cartilage defects on the weightbearing site. Authors analyse the indications of this method and mention the possible risk and technical troubles during the treatment of the first group of patients. Key words: mosaicplasty, deep chondral defects, autologous osteochondral transplantation.