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Therefore, their mechanical properties are very important. Mechanical properties of some biomaterials and bone are summarized in Table 1. [2] Among them, hydroxyapatite is most widely studied bioactive and biocompatible material. However, it has lower Young's modulus and fracture toughness with a brittle nature. Hence, it is required to produce ...
Viscoelasticity of bone can arise from multiple factors related to structures on multiple length scales. [1] Bone is a composite of the bio-polymer collagen and the bio-ceramic hydroxyapatite. Additionally the collagen is plied in various directions around the bone. Bone has two structural forms; cortical and cancellous. [2]
Cancellous bone or spongy bone, [12] [11] also known as trabecular bone, is the internal tissue of the skeletal bone and is an open cell porous network that follows the material properties of biofoams. [13] [14] Cancellous bone has a higher surface-area-to-volume ratio than cortical bone and it is less dense. This makes it weaker and more flexible.
Hence, bone adapts its mechanical properties according to the needed mechanical function: bone mass, bone geometry, and bone strength (see also Stress-strain index, SSI) adapt to everyday usage/needs. "Maximal force" in this context is a simplification of the real input to bone that initiates adaptive changes.
Wood is an example of an orthotropic material. Material properties in three perpendicular directions (axial, radial, and circumferential) are different. In material science and solid mechanics, orthotropic materials have material properties at a particular point which differ along three orthogonal axes, where each axis has twofold rotational ...
To understand the pathology of osteoporosis and skeletal degradation, studying the mechanical properties and behavior of bone is crucial, due to the under-diagnosing of osteoporosis. [93] Mechanical properties of a material depend on the geometry and inherent structure of the materials. [94]
The implants and tibias were then subjected to a shear strength test to determine the mechanical properties of the implant to bone boundary, where it was found to have a shear strength of 5 N/mm 2. [7] Electron microscopy showed the ceramic implants had bone remnants firmly adhered to them. [7]
The mechanical properties of bone greatly influence the functionality of bone. For instance, deterioration in bone ductility due to diseases such as osteoporosis can adversely affect individuals’ life. Bone ductility can show how much energy bone absorbs before fracture. In bone, the origin ductility is at the