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Having trained in advanced orthopedic trauma surgery at a number of leading universities and hospitals in the U.S., France, and Germany, Dr. Nabil Ebraheim is the chief of orthopedic trauma and the director of the orthopedic trauma fellowship at the University of Toledo Medical Center in Ohio. Dr. Nabil Ebraheim served as a reviewer for the Journal of Orthopaedic Trauma and has published numerous papers, book chapters, and continuing medical education texts on the treatment of traumatic orthopedic injuries.
He stated that , majority of bone fractures fall into the categories of open, closed, nondisplaced, and displaced. In a nondisplaced fracture, also known as a stable fracture, the bone maintains its proper alignment and may or may not have a complete break. Displaced fractures occur when the bone shifts after it breaks, so that the broken ends do not line up.
A displaced fracture may be closed, with the bone remaining within the skin, or open, with the skin being broken. The broken skin of an open fracture may stem either from the broken bone itself or from the injury that caused the fracture. Although the bone may slip back into the wound and be invisible to the eye, there is still a risk of infection.
Dr. Nabil Ebraheim's Blog 
Great Info sir. Thanks
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