Table 2.
Epidemiology and data from preoperative, intraoperative, and postoperative evaluations
| Parameter | Aseptic loosening (n = 45) | Septic loosening (n = 19) | p Value |
|---|---|---|---|
| Mean age (years) | 65.8 (range, 24–89) | 65.0 (range, 51–74) | 0.66 |
| Male/female | 18/27 | 9/10 | 0.59 |
| Previous surgery | |||
| Primary arthroplasty | 24 | 11 | |
| Revision arthroplasty | 21 | 8 | 0.74 |
| Preoperative findings | |||
| ESR > 30 mm/hour | 5 | 14 | |
| Mean ± standard deviation (mm/hour) | 19.8 ± 8.7 (range, 4–40) | 48.1 ± 22.0 (range, 22–98) | < 0.001 |
| Serum WBC > 10 × 109/L | 4 | 4 | |
| Mean ± standard deviation (×109/L) | 6.9 ± 2.0 (range, 3.8–12.7) | 8.0 ± 1.9 (range, 5.4–10.8) | 0.06 |
| Serum CRP > 10 mg/L | 9 | 11 | |
| Mean ± standard deviation (mg/L) | 9.6 ± 18.1 (range,1.0–51.5) | 24.8 ± 42.4 (range, 1.7–166.5) | 0.15 |
| Microbiologic analysis | 0.05 | ||
| Single positive | 5 | 3 | |
| Double positive | 0 | 5 | |
| Infection criteria | |||
| Visible purulence | 0 | 5 | |
| Sinus tract | 0 | 3 | |
| Positive frozen section (n = 52) | 0 (n = 37) | 13 (n = 15) | < 0.001 |
ESR = erythrocyte sedimentation rate; WBC = leukocyte count; CRP = C-reactive protein.