Table 3.
Risk factors of PJI in different period after implantation
| Items | Classification of infection time to post-op | P value | ||
|---|---|---|---|---|
| Early | Delayed | Late | ||
| Blood loss | 791 ± 705 | 358 ± 200 | 317 ± 138 | 0.028 |
| Mean ± SD (range) mL | (300, 2800) | (100, 800) | (100, 600) | |
| Operation time | 7.4 ± 2.5 | 4.3 ± 1.3 | 3.4 ± 0.8 | 0.046 |
| Mean ± SD (range) hours | (5, 12) | (2, 8) | (2, 4.5) | |
| Tumor site N (%) | ||||
| Distal femur | 6 (50) | 10 (45.5) | 11 (57.9) | > 0.05 |
| Proximal tibia | 6 (50) | 12 (54.5) | 8 (42.1) | |
| Expandation N (%) | 3 (25.0) | 2 (9.1) | 1 (5.3) | 0.047 |
| Chemotherapy N (%) | 12 (100) | 22 (100) | 19 (100) | > 0.05 |
| Germiculture N (%) | 5 (41.7) | 4 (18.2) | 2 (10.5) | 0.044 |
| ESR N (%) | ||||
| High | 9 (75.0) | 15 (68.2) | 14 (73.7) | > 0.05 |
| Normal | 3 (25.0) | 7 (31.8) | 5 (26.3 | |
| CRP N (%) | ||||
| High | 6 (50) | 9 (40.9) | 11 (57.9) | > 0.05 |
| Normal | 6 (50) | 13 (59.1) | 8 (42.1) | |
ESR erythrocyte sedimentation rate, CRP C-reactive protein