TABLE 1.
Characteristics of 110 study patients with AF or PJI
| Characteristic | Aseptic failure (n = 60) | Prosthetic joint infection (n = 50) | P |
|---|---|---|---|
| Age (median [range]) (yr) | 65 (30–89) | 64 (32–84) | 0.860 |
| Male (no. [%]) | 19 (32) | 19 (38) | 0.125 |
| Type of prosthesis (no. [%]) | |||
| Knee (n = 22) | 2 (3) | 20 (40) | <0.001 |
| Hip (n = 88) | 58 (97) | 30 (60) | <0.001 |
| Type of revision surgery (no. [%]) | |||
| Debridement with prosthesis retention | 0 | 5 (10) | <0.001 |
| One-stage exchange | 59 (98) | 14 (28) | <0.001 |
| Two-stage exchange | 1 (2) | 31 (62) | <0.001 |
| Presence of clinical signs of infection (no. [%]) | |||
| Visible purulence | 0 | 26 (52) | <0.001 |
| Presence of sinus tract | 0 | 12 (24) | <0.001 |
| Preoperative laboratory findings | |||
| Blood leukocyte count of >10 × 109 cells/liter (no. [%]) | 3 (5) | 5 (10) | 0.177 |
| Blood leukocyte count (median [range]) (× 109 cells/liter) | 6.5 (3.5–12.3) | 6.9 (3.6–15.1) | 0.268 |
| Erythrocyte sedimentation rate of >30 mm/h (no. [%]) | 11 (18) | 41 (82) | <0.001 |
| Erythrocyte sedimentation rate (median [range]) (mm/h) | 24 (2–98) | 63 (12–120) | <0.001 |
| Serum C-reactive protein level of >10 mg/liter (no. [%]) | 4 (7) | 32 (64) | <0.001 |
| Serum C-reactive protein level (median [range]) (mg/liter) | 4.17 (0.17–66.5) | 34.3 (0.29–270) | <0.001 |
| Inflammation in histopathology (no. [%]) | 0 | 43 (86) | <0.001 |
| Received previous antibiotics (no. [%]) | 0 | 21 (42) | <0.001 |