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Quadrupedal Mechanics - Anatomy & Physiology (view source)
Revision as of 23:55, 19 June 2013
, 23:55, 19 June 2013→Compression and tensile strength of bone and cartilage
==='''Compression and tensile strength of bone and cartilage'''===
==='''Compression and tensile strength of bone and cartilage'''===
[[File:QMFig 2.14.png|thumb|'''Fig. 2.14 Types of stress''']]
The strength of a tissue is determined by measuring the minimum stress needed to produce permanent deformity in the material. Deformation comes about by pairs of opposing forces that cause compression, tension or shear (Fig 2.14).
The strength of a tissue is determined by measuring the minimum stress needed to produce permanent deformity in the material. Deformation comes about by pairs of opposing forces that cause compression, tension or shear (Fig 2.14).
The compressive strength of fresh compact bone loaded parallel to the grain is about 170 MN.m-2. This is impressive, considering that the compressive strength of marble and granite is little more, at 200MN.m-2. Cartilage has a compressive strength lower than bone.
The compressive strength of fresh compact bone loaded parallel to the grain is about 170 MN.m-2. This is impressive, considering that the compressive strength of marble and granite is little more, at 200MN.m-2. Cartilage has a compressive strength lower than bone.