CHIR113 Lecture 9: Biomechanics
3 Aug 2018
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9th of may 2018: lecture 9 - biomechanics introduction: biomechanics definitions: Biomechanics: the study of the mechanical laws relating to the movement or structure of living organisms. Kinesiology: the study of the mechanics of body movements: levers: A lever is a rigid rod moving around a fixed point, called a fulcrum, where you may apply an effort to move a load: classes of levers: Like a pair of tweezers: examples of levers in the real world, stability vs mobility: A joint"s function ultimately determines the final balance. The hip and shoulder represent the two extremes well: knee: The interplay btw the needs of stability vs the needs for mobility. The knee serves as a classic example of serving these dual masters. To alter the length of the lower extremity requires motion of only a simple hinge joint. Stress is applied force per unit of area (pressure) over which force is exerted.
