RT Book, Section
A1 Sims, Carrie A.
A1 M. Reilly, Patrick
A2 Feliciano, David V.
A2 Mattox, Kenneth L.
A2 Moore, Ernest E.
SR Print(0)
ID 1175129870
T1 Kinematics
T2 Trauma, 9e
YR 2020
FD 2020
PB McGraw Hill
PP New York, NY
SN 9781260143348
LK accesssurgery.mhmedical.com/content.aspx?aid=1175129870
RD 2024/04/20
AB KEY  POINTSA  body  in  motion  stays  in  motion,  moving  at  the  same  speed  and  direction,  unless  acted  on  by  a  force.The  energy  of  an  object  and  its  potential  to  do  damage  are  directly  proportional  to  its  mass  and  the  square  of  its  velocity  .The  total  energy  of  a  system  cannot  be  destroyed,  although  it  may  be  transferred  between  objects  or  transformed  into  work.All  injuries  can  be  explained  by  four  different  types  of  strain  (tensile,  shear,  compressive,  and/or  overpressure).If  a  force  causes  a  decrease  in  the  original  volume  of  a  fluid-  or  air-filled  structure,  there  must  be  a  concomitant  increase  in  the  pressure.The  shape  (and  thus  the  sectional  density)  of  a  bullet  is  subject  to  change  within  the  tissue  and  directly  impacts  the  degree  of  tissue  damage.A  projectile  creates  both  a  permanent  cavitation  or  “bullet  track”  and  a  hydrostatic  pressure  wave  that  stretches  and  damages  adjacent  tissues.In  explosions,  more  energy  is  transferred  if  the  shock  wave  travels  through  a  medium  of  similar  density  (eg,  water  and  the  human  body).