Table 1.
Comparisons of different types of osteomyelitis.
| Events | Post-Traumatic Osteomyelitis | Hematogenous Osteomyelitis | P Value |
|---|---|---|---|
| Number | 403 | 90 | — |
| Average age (years) | 41.33 ± 5.65 | 35.41 ± 5.92 | <0.01 |
| Single site/multiply sites | 398/5 | 89/1 | >0.05 |
| Most common single site | Tibia (242/398) | Femur (39/89) | <0.01 |
| Most common Cierny-Mader type | IV 54.9% (224/408) | III 38.5% (35/91) | <0.01 |
| Average duration of infection (months) | 37.14 ± 9.05 | 174.93 ± 16.14 | <0.01 |
| Rate of sinus | 74.8% (305/408) | 49.5% (45/91) | <0.01 |
| Rate of skin defects | 24.8% (101/408) | 7.7% (7/91) | <0.01 |
| Averaged operation times | 2.60 ± 0.27 | 1.14 ± 0.20 | <0.01 |
| Positive rate of culture | 66.9% (273/408) | 54.9% (50/91) | <0.01 |
| Most common bacteria monomicrobial infection | Staphylococcus aureus 43.6% (102/234) | Staphylococcus aureus 76.2% (32/42) | <0.01 |
| Rate of bone defect or nonunion | 42.9% (175/408) | 4.4% (4/91) | <0.01 |
| Serum levels of preoperative inflammation markers | |||
| WBC (thousands/microL) | 7.49 ± 0.47 | 8.79 ± 0.39 | <0.01 |
| CRP (mg/L) | 17.01 ± 2.33 | 40.14 ± 4.12 | <0.05 |
| ESR (mm/hr) | 24.41 ± 1.88 | 36.5 ± 1.97 | <0.01 |
| Positive rate of serum levels of preoperative inflammation markers | |||
| WBC | 14.9% (60/403) | 26.7% (24/90) | <0.01 |
| CRP | 41.1% (165/402) | 54.4% (49/90) | <0.05 |
| ESR | 38.2% (153/401) | 55.6% (50/90) | <0.01 |
WBC: White blood cell; CRP: C-reactive protein; ESR: Erythrocyte sedimentation rate.