This is a bone infection usually caused by a bacteria or fungus.
When a bone becomes infected, the soft inner tissue (marrow) often swells, as this swells more the tissue presses aganist the outer wall of the bone, the blood vessels in the marrow may be compressed, reducing or cutting off the blood supply to the bone. Without adequate blood supply the parts of the bone may die. The infection can also spread outward to form collections of pus in adjacent soft tissues such as the muscles.
Symptoms and findings during a examination may suggest osteomyelitis. The infected area almost always appears abnormal on bone scans(radionuclidescans using technetium )except in infants, but it may not appear on an Xray untile 3-4 weeks after the 1st symptoms occur.
A ct (computed tomography and magnetic resonance imaging (MRI) also can identify the infected areas. However these tests can not always distinguish infections from other bone disorders.To diagnose a bone infection and identify the bacteria causing the infection doctors may take samples of blood, pus, joint fluid or the bone itself....