ANT 3520 Lecture Notes - Lecture 19: Congenital Disorder, Post-Mortem Interval, Vertebra
12 Aug 2016
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Document Summary
Trauma- an injury or wound to living tissue caused by an extrinsic agent; a force acting upon the body. Fracture (when there is breakage in the bone) causes: Stress- repetitive loading and stressing on the bone. Pathology- fracturing of bone already weakened by disease. Trauma: acute and quick event, solely caused by sudden injury o o. Everything acting on bone will also affect surrounding soft tissue. Collage and other proteins forming organic compound. Allows a certain amount of rigidity and flexibility. Fractures caused by different mechanisms can look similar; same mechanism for fracture can appear different. Factors: magnitude, duration, and direction of force o. Stress- force applied to a given area of bone (depends on scope of force) Strain- deformation (relative to original size and shape of the bone: deformation curve (3phases) Elastic- bone deforms but returns to its original shape. Plastic- deformation occurs but does not return to original shape; does not break.
