Comparative study of the reconstruction of articular cartilage defects with free costal perichondrial grafts and free tibial periosteal grafts: An experimental study on rabbits

The purpose of this study was to compare the chondrogenic potential of free perichondrial with free periosteal grafts in the resurfacing of full-thick ness defects of patellar articular cartilage in rabbits. We used adolescent New Zealand rabbits weighing between 2.4 and 3.6 kg. A 6-mm wide and 3-mm thick defect was created on the patellar articular surface. A total of 30 r abbits were randomly divided into a control group and two test groups. One test group received free perichondrial grafts (PC); the other received free periosteal grafts (PO). All the animals were killed 8 weeks after surgery. All the histological samples were scored from 0 to 17 according to a stand ard scoring system. Differences in the quality of the regenerated tissue we re only found between the control and the test groups. There were no statis tically significant histological differences between the grafted defects of the PC and the PO groups that there are not on any of the variables. The r esults of this study support that there are not significant differences in the quality of the repair tissue when using these two types of biological g rafts.