2 ways to identify injuries of the skeletal system are X-Rays and
magnetic resonance imaging.

X-Rays-form of energy that travel in waves, like the light that your
eyes can see.
Before it happens, they place a lead apron to protect your body from
unnecessary X-Rays. It comes out onto film and the X-Rays pass through
tissue but not bone. It shows the bones in clearly defined white
areas.
X-Rays are able to damage your body cells