Synovial knee fistula: A cause of prolonged morbidity

Postarthroscopy knee fistulae may lead to prolonged morbidity. A 62-year-ol d man presented with a synovial knee fistula 4 weeks after knee arthroscopy , which was confirmed by magnetic resonance imaging. He was treated with an tibiotics and knee immobilization that resulted in closure of the fistula. He then developed recurrent septic knee effusion that required arthroscopic washout, further antibiotic treatment, and physiotherapy. The patient's cl inical condition resolved after a further 6 weeks. This case shows that not all fistulae resolve spontaneously; they may lend to prolonged morbidity a nd necessitate further treatment. We also wish to note that magnetic resona nce imaging is a useful diagnostic tool in place of the traditional sinogra m.