The authors present the way of using the allogenic, frozen, radio-sterilized, spongy bone grafts in operational fillingof defects after infra-articular fracture of proximal tibia. Fifteen patients (II men and 4 women) classified between 30 and 66 years old were evaluated. These patients were operated from 1996 to 1998. The operational treatment with using frozen spongy bone grafts was performed on patients with comminuted split fracture of lateral condyle and depression of tibial plateau. In each case after elevating depressed fragment of tibial plateau bone grafts and screws were used to create a stable joint surface. In the same time other injured structures of the joint (ligaments, meniscus) were being reconstructed. To evaluate the stage of grafts incorporation, radiological examinations were made in; 4 weeks, 8 weeks, 6 months, I year from the date of the operation. We observed the process of calcification and forming trabeculae in bone grafts. The mechanical abilities of the reconstructed joint were evaluated according to the IKDSand Lysholm score. In allcases the spongy bone grafts in the joint were reconstructed and rebuild successfully. Thirteen patients had good and very good results in further clinical examinations. We claim that frozen, allogenic grafts of the spongy bone are very useful in filingdetects of that bone caused by complicated injuries. This method of treatment with its good results is recommended.

Keywords: tibial fracture, plateau fracture, bone grafts, grafts healing