Osteomyelitis is an infection of the bone, a rare but serious condition. Bones can become infected in a number of ways: Infection in one part of the body may spread through the bloodstream into the bone, or an open fracture or surgery may expose the bone to infection. In most cases, a bacteria called Staphylococcus aureus, a type of staph bacteria, causes osteomyelitis. Culture and Sensitivity Anaerobic test is performed on a sample of bone chips to measure the level of Culture of the pathogenic organism in the bone chips. It is performed to confirm Bone Infection and also during the treatment and after the treatment of Bone Infection. It is also known as C/S Anaerobic Bone Chips. It could eliminate the need of a bone biopsy.