Rib fracture is fracture or break in one of the bones composing the rib cage. Rib fractures are very common in blunt trauma to the chest. Rib fractures in themselves seldom pose threat to life of the patient. However rib fracture can be an excellent outside marker for serious and life threatening injuries sustained to the internal visceral organs in the chest. It is worth noting that vital organs like Heart and Lungs are present inside the rib cage.