Table 1.
Demographics
| Age (n = 60)* | 69 years (41/78; 21–93) | |
|---|---|---|
| Gender | Female | 15 (25.0%) |
| Male | 45 (75.0%) | |
| Implants | TKA | 11 (18.3%) |
| (n = 60) | THR | 17 (28.3%) |
| Hemiarthroplasty | 4 (6.7%) | |
| Intramedullary nail | 9 (15.0%) | |
| Plate osteosynthesis | 15 (25.0%) | |
| Foreign body (3 projectiles, 1 shrapnel) | 4 (6.7%) | |
| Signs of infection (n = 60) | Clincal findings (pain, wound redness, swelling, secretion, abscess, wound healing disorder) | 47 (78.3%) |
| Labaratory signs (elevated WBC, CRP) | 39 (65.0%) | |
| WBC in early infection* | 8.7 (6.0/10.8; 3.4–27.7) | |
| WBC in late infection* | 6.9 (5.6/9.2; 3.4–17.7) | |
| CRP in early infection* | 45.6 (11.8/133.9; 0.4–390) | |
| CRP in late infection* | 14.2 (3.3/ 56.9; 0.4–387) | |
| Radiological signs | 34 (56.7%) | |
| Nuclearmedical signs | 13 (21.7%) | |
| Culture positive [≥2 positive probes] | 46 (76.7%) [29 (48.3%)] | |
| Acuity of infection** (n = 53) |
Early infection | 16 (30.2%) |
| Late infection | 38 (69.8%) |
*
Data are presented as median, quartiles and range, otherwise as absolute frequency (in brackets: relative frequency).
TKA, total knee arthroplasty; THA, total hip arthroplasty; WBC, white blood cell count; CRP, c-reactive protein.