ANSWER 1

1. True. Sensitivities as follows: 85% for joint pain, 78% for joint swelling, 57% for fever.1

2. False. Their sensitivities are poor (75% for both white blood cell count and erythrocyte sedimentation rate)2 and specificities are very poor. Synovial total white blood cell count, percentage polymorphonuclear cells and Gram stain are the most helpful test pending synovial fluid culture.1 3

3. False.

4. True. In addition to antibiotics, the successful treatment of …