Meningococcal arthritis.
D000328:Adult; D001170:Arthritis, Infectious / Q000209:etiology*; D006801:Humans; D008297:Male; D008589:Meningococcal Infections / Q000150:complications*; D009345:Neisseria meningitidis / Q000302:isolation & purification; D013582:Synovial Fluid / Q000382:microbiology