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DEFINITION
The osteomielitis is the sharp or chronic bone infection.
CAUSES, INCIDENCE AND FACTORS OF RISK
1. Sharp Osteomielitis. It can happen for a traumatism that it exhibits the bone and predisposes it to the infection; or, the infection is located in another place of the body, and spreads to the bones over the blood (osteomielitis hematógena). In the children it affects normally to the long bones. In the adults, more commonly infected there are the spine and the pelvis. The most frequent microorganisms might be a bacterium (especially golden staphylococcus) or a mushroom. In the bone pus forms, what can provoke an abscess of the bone, altering his normal blood supplying.
2. Chronic Osteomielitis. The chronic ostomielitis happens when the absence of blood supplying does that the textile of the bone dies. The chronic infection can go so far as to persist flashing signal for years, in located foci that they usually call "sequestrations". Risk factors for the chronic ostomielitis are the recent traumas, the diabetes and the use of intravenous drugs.
CLINICAL SYMPTOMS
- pain and sensibility carries to extremes of the affected extremity.
- local distension of the foot, ankle or leg.
- fever, shakes, sudoración.
- general discomfort, discomfort.
- suppuration for the skin, in case of chronic infection.
DIAGNOSIS
Physical examination. It shows the sensibility of the bone and the distension of the area.
Analytical. As in any important infection, there increase the leukocytes (white globules) in blood, as well as the speed of globular sedimentation (VSG).
The blood cultivation identifies the causative organism.
Biopsy. Sometimes there is necessary a biopsy of the injury of bone to detect the organism.
You X-ray. They can be altered in the affected bone.
TREATMENT
1. Sharp infection. The target of the treatment is to eliminate the infection and to prepare the development of a chronic infection. The administration of high doses of intravenous antibiotics is begun immediately, and it must only be suppressed before results of the cultivation repeatedly negative.
2. Chronic infection. In the cases of chronic infections, there is usually indicated the surgical eradication of the textile dead of the bone, which will be replaced with a bone graft, or a material that produces the development of a new textile. It will be continued by medication during, at least, 3 weeks after the surgical intervention.
3. Orthopedic prosthesis infection. There would be extracted the prosthesis and the textile of the whole area. Depending on the gravity of the case, other one will implant prosthesis to herself in the same operation or after certain time
I PREDICT
The mortality rate is almost void in the cases of normal infections. It is higher in chronic infections, even in those who surrender to the operation. A chronic osteomielitis can end in amputation.
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