Osteochondral Defects of the Knee treated with Mosaicplasty. Results at Eight Years of Follow-Up

Objectives: There are several surgical options described for osteochondral defects of the knee depending on the size, location and condition of subchondral bone. The main indication for a mosaicplasty procedure is a less than 4 cm2 femoral condyle lesion. The purpose of this study was to analyze a series of patients treated with mosaicplasty with average eight years of follow-up. Methods: We retrospectively evaluated sixty-two patients with osteochondral defects of the knee who underwent a mosaicplasty between 2001 and 2014 with a minimum follow-up of 2 years. Patients were evaluated using the Lysholm score, International Knee Documentation Committee Score (IKDC) and Kellgren-Lawrence radiographic scale. Results: The mean Lysholm score was 80.1 and IKDC was 66.7. Forty-two patients had isolated mosaicplasty and 20 patients presented an associated surgical procedure (osteotomy, ACL reconstruction, meniscectomy). There were no significant differences between the Lysholm and IKDC scores in these two groups. Conclusion: We consider that mosaicplasty is a satisfactory procedure with good functional results in patients with focal articular cartilage lesions of the knee.