Osteomyelitis is inflammation of the bone caused by an infecting organism.Bone infections are caused when a break in the skin allows germs, usually bacteria, to spread into bone tissue. Bacteria can also spread from infections in other parts of the body by traveling through the blood to infect a bone.
Acute: Acute osteomyelitis is a new bone infection that develops in about two weeks' time. It's more common in children and more likely to spread into bone through the blood. The most common cause is a bacterium called Staphylococcus aureus.
Chronic: Chronic osteomyelitis is more likely to occur if there is an open injury near a bone that allows bacteria to spread directly into the bone. This type of infection is more common in adults and can take from one to several months to develop