O2406 AUTOLOGOUS OSTEOCHONDRAL TRANSPLANTATION FOR THE TREATMENT OF KNEE CARTILAGE DEFECTS. A 2 TO 5 YEAR FOLLOW UP

Abstract

Aim: The aim of this prospective study was to evaluate the results of arthroscopic treatment of chondral and osteochondral lesions of the knee with osteochondral autogenous transplantation (OAT). Methods: Thirty patients with symtomatic cartilage lesions of the femoral condyles were treated with OAT. Inclusion criteria were full thickness femoral condyle defects between 1 and 3 cm in diameter. Grafts were harvested from the superior intercondylar notch and press þt into holes drilled into the defect starting adjacent to the articular cartilage margin. All patients were evaluated both pre and postop with the Lysholm score, IKDC Form and radiological assessment. Second look arthroscopy was offered to all patients independently of their symptoms. Results: The mean follow-up was 44.7 months. The mean Lysholm score signiþcantly improved from 43.6 pre-operatively to 87.5 postoperatively (p< 0.001, paired t-test) with excellent and good results in 25 (83.3%) patients. Using the IKDC assessment 26 (86.6%) of the patients reported their knee as being normal or nearly normal. Repeat arthroscopies have been done in 9 (30%) patients. Seven of these demonstrated complete healing and two partial healing. The histological examination ascertained the presence of viable chondrocytes and normal hyaline cartilage in the completely healed cases. Conclusions: Our study suggest that arthroscopic OAT is an effective method for treating chondral defects of the femoral condyles in selected cases. However, further studies with long-term follow-up are needed to determine if the transplanted area will maintain functional and structural integrity over time.