COMPARISON OF MECHANICAL-PROPERTIES OF HUMAN, BOVINE BONE AND A NEW PROCESSED BONE XENOGRAFT

The study compared the mechanical properties of human bone, fresh bovi ne bone and a new highly purified bone xenograft: T650 (Lubboc-Laddec) . Destructive, compressive tests were performed to determine Young's m odulus and ultimate strength, with a constant deformation rate of 0.02 5 mm min-1. The stress-strain curves obtained from all the non-human s pecimens, especially the T650, did not differ significantly from those observed with human bone. Human and fresh bovine samples presented a significantly different Young's modulus. The T650 samples, depending u pon their trabecular texture (dense or medium) also differed significa ntly from each other (132.9 +/- 52.3 versus 80.0 +/- 37.3 MPa, P < 0.0 5). Their moduli were similar to those of bovine and human cancellous bone, respectively (117.49 +/- 61.53 versus 77.36 +/- 54.96, P < 0.05) . The ultimate strength of T650 dense (9.6 +/- 3.7 MPa) was similar to bovine (8.5 +/- 4.2 MPa) and human bone (8.78 +/- 5.2 MPa); the T650 medium (5.9 +/- 2.8 MPa) was significantly different from the other sp ecimens.