Joint effusion a resultant large effusion due to inflammation. Gout is usually present with recurrent attacks of acute inflammatory arthritis (red, tender, hot, swollen joint). It is caused by elevated levels of uric acid in the blood that crystallizes and deposits in joints, tendons, and surrounding tissues. Gout affects 1% of individuals in Western populations at some point in their lives. Trauma from ligamentous, osseous or meniscal injuries can result in an effusion. These are often hemarthrosis or bloody effusions. Rest Joint effusion A joint effusion is the presence of increased intra-articular fluid. It may affect any joint. Commonly it involves the
Septic arthritis as longer lasting infections cause more destruction to the joint. The involved organism, age, preexisting arthritis, and other comorbidities can also increase this risk. Gonococcal arthritis generally does not cause long term impairment. For those with "Staphylococcus aureus" septic arthritis, 46 to 50% of the joint function returns after completed antibiotics. In pneumococcal septic arthritis, 95% of the joint function will return if the person survives. There is also one-third of the people at risk of functional impairment (due to amputation, arthrodesis, prosthetic surgery, and deteriorating joint function) if they have underlying joint disease or having synthetic joint implant. Mortality