Single swollen and painful joint, with severe restriction in range of motion.
Synovial fluid is essential to diagnosis.
It is typically purulent with leukocyte counts ranging 50-150,000 cells/mm3.
Gram stains have a poor sensitivity of 30-50%
View Common Pathogens
High suspicion for N. gonorrheae
Sexually active individuals. Tends to present with fever, chills, skin lesions, polyarthralgias and tenosynovitis and more likely to have oligoarthritis.
MRSA risk factors present
Evidence of MRSA infection elsewhere
Nasal colonization with MRSA
Injection drug use
None of the above