Life forms that have low body mass can hunt for food on theundersurface of branches or along shear cliff faces quite unperturbedby gravity. For larger animals, the hunt for dinner and thestruggle to avoid becoming someone else's meal require rapidmovement against gravity. This need is met by the lever functionof long bones, three-dimensional masterpieces of biomechanicalengineering that, by their material composition and structuraldesign, achieve the contradictory properties of stiffness andflexibility, strength and lightness.1
Material stiffness results from the encrusting of the triple-helicalstructure of collagen type I with hydroxyapatite crystals, whichconfers . . . [Full Text of this Article]
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From the Austin Hospital, University of Melbourne, Melbourne, Australia.
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