ANALYSIS OF THE MECHANICAL PROPERTIES OF THE OSTEOCHONDRAL PLUGS IN AUTOLOGOUS OSTEOCHONDRAL TRANSPLANTATION
Abstract:
The Osteochondral Autologous Transplantation is a technique which utilise implants in the area of the chondral defect osteochondral plugs harvested from a donor area, thus covering the defect with hyalin cartilage. The purpose of this study is to analyse the behaviour at compesion of the plugs harvested from the femoral trochlea. We have harvested 7 plugs from the trochlea of a beef femur and then we have positioned them at the Instron 5587 Testing Machine. We have loaden them along the mechanical axis with forces up to 1.500 N, with concomitent aquisition of optical data with the Aramis 2M System. The results show that the compression forces goes to 1.000 – 1.500 N, after the compression with 2-3 mm of the plugs. Similar behaviour has the variation of the tension in the cylinder. Regarding the specific strain, most of the cylinders were deformed over 80%.
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