The articular cartilage lesions are frequent and highly affect the patient�s quality of life. Although remarkable progress in the treatment of focal lesions of articular cartilage were lately made, controversies still exist regarding the treatment options. The main purpose of this study was to evaluate and compare the preoperative and 6 months postoperative knee functional scores of patients undergoing arthroscopic repair of knee chondral lesions by: debridement, microfractures, osteochondral autograft transplantation and autologous matrix-induced chondrogenesis. Chondral reconstruction with collagen membranes and osteochondral autograft transplantation techniques showed a superior result at 6 months postoperatively compared to microfracture techniques and mechanical debridement.

The main objective of the current study was to evaluate the success of arthroscopic arthrolysis treatment of patients with knee stiffness after total knee arthroplasty. Six patients who underwent arthroscopic arthrolysis were evaluated retrospectively, all of them being treated conservatively before going for surgery. Results showed significant improvement of range of motion and Knee Society Score at the latest follow up compared to the preoperative values. This study concludes that arthroscopic arthrolysis is an effective and reproductible technique for the treatment of knees stiffness after total knee arthroplasty.