| Children | Adults | |||||
| <2 years | 2–16 years | Total | 16–65 years | >65 years | Total | |
| No. of cases | 31 | 38 | 69 | 101 | 83 | 184 |
| Infected joint: | ||||||
| Knee | 35.5% | 35% | 35% | 45% | 53% | 49% |
| Hip | 38.7% | 32.4% | 35.5% | 12.6% | 15% | 13.7% |
| Shoulder | 6.5% | 0% | 2.9% | 5.8% | 13.8% | 9.5% |
| Ankle | 9.7% | 16.2% | 13.2% | 10.6% | 5.7% | 8.4% |
| Hands and feet | 0 | 7.9% | 4.3% | 11.9% | 8.4% | 10.3% |
| Other | 9.6% | 8.5% | 9.0% | 14.1% | 4.1% | 9.0% |
| Iatrogenic infections | 0% | 2.7% | 1.5% | 42% | 40% | 41.8% |
| Admission data: | ||||||
| Temperature (°C) | 38.1 | 38.1 | 38.1 | 38.0 | 38.0 | 38.0 |
| Peripheral blood: | ||||||
| WBC (×109/litre) | 13.6 | 10.5 | 11.9 | 11.6 | 9.5 | 10.7 |
| ESR (mm/h) | 52 | 28 | 35 | 54 | 80 | 68 |
| CRP (mg/litre) | 48 | 38 | 44 | 125 | 189 | 125 |
| Culture positive | 23% | 24% | 24% | 28% | 41% | 35% |
| Synovial fluid: | ||||||
| WBC (×106/litre) | 107 100 | 65 900 | 72 600 | 50 000 | 58 400 | 52 700 |
| Gram stain positive | 35% | 35% | 35% | 46% | 52% | 49% |
| Culture positive | 45% | 62% | 54% | 87% | 81% | 84% |
| Normal admission values: | ||||||
| Temperature <37.8°C | 19% | 26% | 23% | 41% | 44% | 42% |
| WBC <10×109/litre | 6% | 43% | 26% | 36% | 57% | 46% |
| ESR <20 mm/h | 8% | 26% | 18% | 18% | 7% | 12% |
| CRP <10 mg/litre | 9% | 11% | 7% | 12% | 18% | 15% |
Median values for WBC, ESR, CRP and temperature are shown.
CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; WBC, white blood cell count.