Infection of skin and other soft tissue can lead to infection of bones (osteomyelitis) and joints (septic arthritis). Without prompt treatment, orthopaedic infections can become chronic. Thus, even a small scratch on the fingertip has the potential to permanently disable your hand, or worse.

Fortunately, early diagnosis, appropriate antibiotic therapy, and surgical intervention when required can cure most infections and prevent permanent problems.

To control the spread of infections in hospitals, doctors and nurses wear gloves and gowns and wash their hands frequently.

To prevent infections in skin wounds, follow these tips:

• First control bleeding, and then clean the wound with soap and water.
• Keep all foreign matter (i.e., hair, clothing, dirt and fluids) out of the wound.
• Do not try to remove matter embedded in the wound.
• Use sterile materials for the first dressing of the wound.
• See your doctor for final, definitive cleaning of the wound.

Having certain chronic diseases puts you at greater risk for infections. Examples include HIV, rheumatoid arthritis, diabetes mellitus, hemophilia, and sickle cell anemia. You can become infected through direct contact with an infected person or through indirect contact, as from a contaminated object.

Infections enter the body through breaks in the skin, especially puncture wounds and other injuries that are difficult to clean.

Sometimes, joint infections develop from an internal hip or knee replacement device (prosthesis). The knee is the most commonly infected joint.

An infection may cause redness, warmth, and inflammation around the affected area. The area may be stiff, drain pus, and lose range of motion. Infections can give you fever and chills.

Infants may act irritable and lethargic, refuse to eat, or vomit. Always suspect infection if your child has pain or swelling in the limbs, spine, or pelvis. The child may limp or refuse to walk.

Infections pose special risks to young children for a number of reasons:

• Children under the age of 3 are easily infected. Their immune systems are not fully developed and they tend to fall down a lot, opening the skin to infection.
• Infections spread quickly through a young child's circulation system and bone structure.
• Damage to bones and joints caused by infection can harm a child's growth and lead to severe physical dysfunction. Infection of child's hip joint is a surgical emergency.

• See your doctor right away for early diagnosis and treatment if you suspect infection.
• Tell the doctor about any chronic diseases that may affect treatment.
• Describe the symptoms and when they began. Was there a previous infection? Were you recently injured? Have you ever had surgery?
• Your doctor may ask you to move the affected area to determine if motion increases pain.
• If the patient is a child (especially an infant) the doctor may examine the rest of his or her body for other possible sites of infection.
• Sometimes infected bones do not show symptoms (subclinical osteomyelitis).
• Your doctor will probably take X-rays or use more sophisticated imaging tools, such as MRI (magnetic resonance imaging) scans to see the extent of damage to bone and soft tissue. The doctor may need to take blood samples and remove fluid from the infection using a needle-syringe (aspiration).
• Laboratory tests on these samples can help identify bacteria or other organisms causing the infection.

Your doctor may prescribe antibiotics that you take through a vein (intravenous, or IV) or swallowed by mouth (orally).