These bone infections are called osteomyelitis. A sample may also be submitted for bacterial culture and. The character of the fluid (color, viscosity), the amount of protein in the fluid, and the number and types of white blood cells in the fluid will be determined. Traumatic injuries that expose your bone to the air can also result in an infection. Obtaining a synovial fluid sample is one of the most important diagnostics to perform in cases with suspected infection. Sometimes infections that start in the bursae or other parts of your knee can reach the bones. Warmth and swelling then occur as the infection spreads throughout the rest of your knee joints. Bursae are fluid-filled sacs that pad and protect your knee.īacteria can penetrate these sacs and create an infection. Knee bursitis is any kind of inflammation that affects the bursae in your knee. Existing joint conditions, such as rheumatoid arthritis, and immune-suppressing medications can increase your risk for developing an infection. Trauma to your knee joint due to an animal bite, puncture wound, or an existing infection on your skin can cause this kind of knee infection. Bacterial joint inflammationīacterial joint inflammation is also called septic arthritis. A synovial fluid analysis is a group of tests that checks for disorders that affect the joints. ACL repair and meniscus repair are among the common knee surgeries that can result in an infection. Surgeries performed to repair torn cartilage or tendons can also introduce bacteria to the knee joint. Artificial joints can become infected at the time of your surgery, or even years after your surgery. Since artificial joints are made of metal and plastic, they don’t have any sort of immune capability to fight off harmful bacteria. However, as joint replacements are on the rise, so is the rate of infection. In less than 1 percent of joint replacement surgeries, an infection occurs around the area of the artificial implant. Knee replacement surgery is a common surgery that doesn’t present complications for most people. Diabetes medications and immune-suppressing prescription drugs can put you at a higher risk for this kind of infection. Soft tissue infections send more than 14 million people to the doctor for treatment each year in the Untied States. These bacteria live on your skin, even when your skin is healthy, but can enter your knee joint area through any open wound on your knee. Soft tissue infections, also called cellulitis, are most often caused by staph bacteria. However, its diagnostic utility has not been evaluated explicitly in cases with marked loosening or migration of the implant. Here are some of the most common conditions related to knee infections. Background/aim: Synovial calprotectin has been demonstrated as a promising biomarker for periprosthetic joint infections (PJI) in painful total hip (THA) and knee arthroplasties (TKA).
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