septic arthritis

infection in a joint. The joint is swollen, hot, and tender, and movement is very restricted and painful. The infecting organism can enter the joint via the bloodstream or from a penetrating injury. Treatment is by arthrotomy or arthroscopy, irrigation of the joint, and antibiotics. If untreated, the articular cartilage is destroyed, leaving a stiff and deformed joint.

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a type of infectious arthritis, usually acute, characterized by inflammation of synovial membranes with purulent effusion into a joint or joints. It is most often due to Staphylococcus aureus, Streptococcus pyogenes, S. pneumoniae, or Neisseria gonorrhoeae, usually caused by hematogenous spread from a primary site of infection although joints may also become infected by direct inoculation or local extension. Called also bacterial, pyogenic, or suppurative a.

Medical dictionary. 2011.

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