布鲁菌病是系统性感染性疾病，临床表现多样，在非流行区易被忽视。本病以骨关节受累常见，关节症状多数为反应性关节炎，以单关节化脓性关节炎为首发表现的病例少见。本文报道1例布鲁杆菌性化脓性单膝关节炎的临床表现和诊疗情况。

Brucellosis is a systemic infectious disease with a broad spectrum of clinical manifestations. It may go unnoticed, particularly in the areas with low incidence. Osteoarthicular manifestations are often seen in brucellosis but most of brucellar monoarthritis cases are reactive rather than being septic. Here we report the clinical manifestation, diagnosis and treatment of a case of brucellar septic monoarthritis of the knee joint.