TNCC: Biomechanics, Kinematics, MOI
"yaw" of a projectile - ANSability to move up and down
acceleration forces - ANSsudden and rapid onset of motion
ex: parked car hit by a high speed vehicle
another form of mechanical energy with compression forces - ANShanging,
strangulation, or compression asphyxia (chemical)
Biomechanics - ANSgeneral study of forces and their effects on living tissue & the
human body
cavitation - ANSseparation of tissue resulting from a sound and/or hydraulic wave force
can cause crushing/tearing/shearing forces
Chemical energy - ANSheat energy transfer from active chemical substances such as
chlorine, drain cleaner, acids, or plants
common mechanisms of blunt trauma - ANS1. Fall
2. MVC
3. Bike collisions
4. Peds struck
5. Assualts
compression forces - ANSexternal force applied at time of impact
ex:
stationary objects (dashboard or steering wheels that push into someone)
objects in motion (bullets/stabbing instruments/bats & balls/fits and feet)
blast forces
compression strength - ANStissue's ability to resist crush force
deceleration forces - ANSsudden stop in the body's motion
ex: falls/collisions
difference in pedestrian struck (adult vs peds) - ANSadults commonly have lateral or
posterior impacts as they try to turn away while peds usually turn toward the car causing
anterior impact
down & under injuries - ANSlower extremity & pelvis fractures
drowning is what kind of energy? - ANSmechanical energy forces are involved when
water enters the lungs and shearing force cause the lungs to expand and bleed
dry drowning - ANSresult of spasm of the larynx when water enters the throat, this
causes a mechanical airway obstruction and altered hemodynamics or blood flow
