Types of Fractures
In a non-displaced fracture, the bone cracks with the broken pieces still in alignment. The injury is not visible from the outside, but shows up as a line or crack on a x-ray.
In a displaced fracture, the bone breaks in two or more pieces that have moved out of alignment. The distortion is visible from the outside and the break often causes severe pain.
An open fracture [often called a compound fracture] is one in which the bone breaks through the skin; it may then recede back into the wound and not be visible through the skin. There is a risk for deep bone infection here.
A closed fracture is when the bone breaks but there is no puncture or open wound in the skin.
Greenstick fracture is an incomplete fracture in which the bone is bent. This type occurs most often in children. [I’ve seen this in an nclex practice question!]