Table 1.
Main characteristics of the study population (n = 116).
| Characteristics |
N (%) or mean or median, as appropriate |
|
|---|---|---|
| Age | ||
| Mean (SD) | 66 (13) | |
| Median (IQR) | 67 (61–74) | |
| Gender | ||
| Female | 59 (50.86%) | |
| Male | 57 (49.14%) | |
| Charlson score | ||
| Mean (SD) | 3.5 | |
| Median (IQR) | 3 | |
| Score ASA | ||
| Mean (SD) | 2 | |
| Median (IQR) | 2 | |
| 1 | 25 (21%) | |
| 2 | 61 (52%) | |
| 3 | 29 (25%) | |
| 4 | 3 (2%) | |
| BMI | ||
| Mean (SD) | 29 | |
| Median (IQR) | 28 | |
| Type of infection | ||
| Monomicrobial infection | 76 (66%) | |
| Polymicrobial infection | 21 (18%) | |
| Undocumented infections | 18 (16%) | |
| Type of the initial pathogen* | ||
| S. aureus | 31 (27%) | |
| Coagulase-negative Staphylococci | 26 (22%) | |
| Streptococcus spp. | 13 (11%) | |
| Cutibacterium acnes | 15 (13%) | |
| Enterococcus faecalis | 5 (4%) | |
| Corynebacterium spp. | 4 (3%) | |
| Pseudomonas spp. | 1 (1%) | |
| Burkholderia spp. | 1 (1%) | |
| Actinomyces neurrii | 1 (1%) | |
| Veillonela spp. | 1 (1%) | |
| Osteoarticular infection categories | ||
| Category 1 | 76 (65.52%) | |
| Category 2 | 21 (18.1%) | |
| Category 3 | 13 (11.21%) | |
| Category 4 | 6 (5.17%) | |
| Infection localization | ||
| Hip | 55 (47.41%) | |
| Knee | 61 (52.59%) | |
*
at the time of explantation or at the time of DAIR before explantation.
SD, standard deviation; IQR, interquartile range; ASA, American society of anesthesiologists; BMI, body mass index; DAIR, debridement antibiotics and implant retention.
Osteoarticular categories: explantation, then reimplantation (category 1); 1st surgery (usually debridement and implant retention also called DAIR procedure), explantation, then reimplantation (category 2); explantation, 2nd look (usually spacer exchange), then reimplantation (category 3), 1st surgery (usually DAIR), explantation, 2nd look (usually iterative DAIR), then reimplantation (category 4).