ATTR 1100 Lecture Notes - Lecture 9: Neurapraxia, Hematoma, Osteochondrosis
Document Summary
Trauma physical injury or wound, produced by internal or external force. Mechanical injury results from force or mechanical energy that changes state of rest or uniform motion of matter. An external force acting on the body causing internal reactions within the tissues. Ability of a tissue to resist a load. Greater stiffness = greater magnitude load can resist. Internal change in tissue (i. e. length) resulting in deformation. Point at which elasticity is almost exceeded is the yield point. Force that results in tissue crush - two forces applied towards one another. Force that moves across the parallel organization of tissue acute injury something has initiated the injury process chronic injury it doesn"t properly heal. Stretch, tear or rip to muscle or adjacent tissue. Cause is often obscure: abnormal muscle contraction is the result of 1)failure in reciprocal coordination of agonist and antagonist, 2) electrolyte imbalance due to profuse sweating or 3) strength imbalance.
