X-Ray

Asking a hypothetical question:

If I broke my leg, would I need an X-Ray?


Ultrasound

Asking a hypothetical question:

If I had a lump in my throat, would I need an ultrasound?


Cast

Asking a hypothetical question:

If I broke my ankle, would I need a cast?


Crutches

Definition - crutches are used to keep weight off an injured bone.

Example - I need to use crutches to heal my broken foot.

Asking a hypothetical question:

If I got cast, would I need crutches?