Trauma that covers a larger surface area is called what?

There are many kinds of physical trauma that can happen to the body. But generally speaking, a type of trauma that covers a larger surface area is known as blunt force trauma. This is what forensic investigations look at when someone has been involved in a car accident, homicide, or injurious events. Blunt force traumas can cause such severe damage to the tissues of the body that's why it is the first thing that crime scene investigators take a look at this firsthand. 

Broken bone result of heredity

Making sure the equipment is cleaned daily and insuring proper hygiene is kept up with the working staff.