Characteristics of Canine Trabecular Bone
Trabecular bone (TB) has a complex and porous structure that also depends on the health of the organism. Past studies attempt to expand on the knowledge of TB. However, results vary and more research is needed to obtain a greater understanding of TB. Research on canine trabecular bone especially lacks to understand the mechanics of dog bone tissue. This study expands on the information available regarding canine TB. Canine TB was tested and compared between three different states: healthy, osteonecrotic, osteoarthritic. Cylindrical TB samples were compression tested using an MTS Insight 2 to obtain the tissue’s elastic stiffness and strength. TB samples were viewed using scanning electron microscopy (SEM) to observe the tissue properties. The ultimate compressive strength was highest in healthy samples (28.766 ± 10.975 MPa), then osteonecrotic samples (19.632 ± 2.840 MPa), and finally osteoarthritic samples (13.958 ± 8.805 MPa). Healthy samples had the highest elastic modulus, while the elastic modulus for osteonecrotic samples was lower than that of osteoarthritic samples. The stress concentrations in the connective tissue and the decrease in density of TB were the main causes of the lower elastic modulus and strength for osteonecrotic and osteoarthritic conditions, respectively.
