bones have 4 functions

protect organs, rigid kinematic links, sites of muscle attachment & muscle actions.

bones have 4 functions

protect organs, rigid kinematic links, sites of muscle attachment & muscle actions.

bone composition

60% inorganic portion of mineral salts (makes bone hard and rigid). 30% organic matrix of collagen(makes bone flexible and tough. 10% water.

bone composition

60% inorganic portion of mineral salts (makes bone hard and rigid). 30% organic matrix of collagen(makes bone flexible and tough. 10% water.

two types of bone texture

cortical bone (outer layer, high density), cancellous bone (inner layer, loose mesh).

two types of bone texture

cortical bone (outer layer, high density), cancellous bone (inner layer, loose mesh).

anisotropic definition

different mechanical properties.

anisotropic definition

different mechanical properties.

a bone can withstand approximately x amount of force.

190 megapascals in compression, 130 megapascals in tension & 70 megapascals in shear.

a bone can withstand approximately x amount of force.

190 megapascals in compression, 130 megapascals in tension & 70 megapascals in shear.

stress vs strain definition

stress is how much force, strain is how much shape change.

stress vs strain definition

stress is how much force, strain is how much shape change.

elastic region definition

when force is placed on a bone, it returns to its original state after the force leaves the bone.

elastic region definition

when force is placed on a bone, it returns to its original state after the force leaves the bone.

plastic region definition

no longer returns to original dimensions when load is released.

plastic region definition

no longer returns to original dimensions when load is released.

compressive loading definition

forces squeeze a structure, causing it to shorten & widen.

compressive loading definition

forces squeeze a structure, causing it to shorten & widen.

tensile loading definition

forces a structure to stretch causing it to lengthen & narrow.

tensile loading definition

forces a structure to stretch causing it to lengthen & narrow.

shear loading definition

forces twist the structure causing angular deformation.

shear loading definition

forces twist the structure causing angular deformation.