I Reconstruction of Articular Surface by Transfixation of an Osteochondral Fragment to the Femoral Condyle Using a Bone Transpalnt: An experimental study

The aim of the study was to evaluate the surgical technique concerning reconstruction of the articular surface by transfixation of an osteochondral fragment to the femoral condyle in growing and young adult rabbits by means of bone transplants. After 1–312 days the specimens were examined macroscopically and by histology, fluorescence labelling and microradiography.The osteochondral fragment was stabilized to the condylar bed and histologically observed to unite within 3 weeks. The bone transplant participating actively in the healing process was almost totally resorted within about 3 months. Fibrous tissue, as well as fibrous and hyaline cartilage, filled out the cleavage in the articular surface. The late results achieved depended on the success of the primary reconstruction. Remodelling observed by fluorescence labelling activity continued for 4 months or more, when the distal tip of the bone transplant was essentially resorbed. Calcified tissue observed by microradiography commenced filling out the line between fragment and condyle after 3 weeks and continued so for about 4 months in both growing and adult rabbits. Macroscopically excellent and acceptable results were achieved in 90% of the cases.