M00.06

Clinical Causes: Spread of Staphylococcus bacteria through blood from an infection elsewhere in the body Direct inoculation of bacteria into the knee joint due to injury or surgery Contamination during medical procedures involving the knee Weak immune system that allows bacteria to infect the joint more easily Chronic skin infections near the knee area

Key Symptoms: Severe pain in the knee, especially during movement Swelling and redness around the knee joint Warmth over the affected area Difficulty moving or bearing weight on the leg Fever and chills in some cases General feeling of fatigue or malaise

Diagnosis Path: Diagnosing staphylococcal arthritis involves a combination of clinical examination and laboratory tests. Key steps include: - Physical assessment to evaluate joint swelling, warmth, and range of motion - Blood tests to detect infection markers and identify the presence of bacteria - Joint aspiration to remove and analyze synovial fluid for bacteria, white blood cells, and other indicators - Imaging studies such as X-rays or MRI to assess joint damage and rule out other causes Early detection through these methods helps in initiating appropriate treatment promptly.

Treatment Protocols: Managing staphylococcal arthritis of the knee generally involves a combination of therapies aimed at eradicating the infection and preventing joint damage. Typical treatments include: - Antibiotic therapy tailored to target Staphylococcus bacteria, often administered intravenously over several weeks - Draining the infected joint through aspiration or surgical procedure to remove pus and reduce pressure - Immobilization or use of supports to prevent further injury - Pain management with medications suitable for inflammation and discomfort - In some cases, surgical removal of infected tissue or joint replacement might be necessary if there is significant joint damage Rehabilitation exercises and physical therapy may be recommended following treatment to restore joint function