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Biomechanics

Biomechanics . applies mechanics to biology physiological and medical applications are the main points in this course . Biomechanics . ”Biomechanics is the science that examines forces acting upon and within a biological structure and effects produced by such forces.”

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Biomechanics

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  1. Biomechanics applies mechanics to biology physiological and medical applications are the main points in this course

  2. Biomechanics ”Biomechanics is the science that examines forces acting upon and within a biological structure and effects produced by such forces.” B.M. Nigg

  3. Historical background • Leonardo da Vinci, 1452-1519 • Andreas Vesalius, 1514-1564 • Galileo Galilei, 1564-1642 • William Harvey, 1578-1658 • René Descartes, 1596-1650 • Giovanni Alfonso Borelli, 1608-1679 • Robert Boyle, 1627-1691 • Robert Hooke, 1635-1703 • Isac Newton, 1642-1727 • Leonard Euler, 1707-1783 • Thomas Young, 1773-1829 • Jean Poiseuille, 1797-1869 • Adolf Fick, 1829-1901 • ....

  4. Leonardo da Vinci

  5. Andreas Vesalius

  6. Giovanni Alfonso Borelli

  7. The way of solving a Biomechanical problem 0. Description of the anatomy, the CAD-drawing. How does the construction work mechanically ? Kinematics Anatomy Limitations

  8. 2. What about the loading ? Equations of equilibrium (moments) Equations of equilibrium (forces) Outer forces

  9. 2. What about the loading? Internal forces Loading Compression Tension Ligament Bending Cartilage Loading Compression Tension Bending

  10. It is not obvious that the position follows unambiguous from the loading … ONLY PASSIVE ELEMENTS The position is given from the loading WITH ACTIVE ELEMENTS The position can be com- pletely different even if the loading is the same

  11. 3. Constitutive relations Mechanical properties of the most important constituents of bone, muscles, tendons, ligaments, cartilage etc. STRESS STRAIN COMPACT BONE (APATITE AND COLLAGEN STRESS TENDON (COLLAGEN) STRAIN

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