infectious arthritis

Infectious arthritis, also known as septic arthritis, is a joint inflammation caused by microorganisms like bacteria, fungi, or viruses. This infection can enter the joint through direct contamination, the bloodstream, or by spreading from nearby bone infections.12

Key characteristics of infectious arthritis include:
* Symptoms: Pain, stiffness, swelling, and redness around the affected joint. Fluid may accumulate in the joint cavity.1
* Commonly Affected Joints: Often affects a single large joint, such as the knee, or a few joints, rather than many.1
* Causes: Bacteria like Staphylococcus aureus are common culprits. It can also result from infections like gonorrhea.12
* Consequences: If not treated promptly, the pus formed can rapidly damage joint cartilage, leading to permanent deformities and loss of mobility (ankylosis).12

Treatment involves antimicrobial drugs, joint drainage, and rest.2