Table 1.
Basic characteristics of the patients with total joint arthroplasty (TJA) with prosthetic joint infection (PJI) and those without PJI (aseptic TJA)
| PJI | Aseptic TJA | p Value | |
|---|---|---|---|
|
Patients; N |
89 |
214 |
|
|
Gender; Men/Women |
44/45 |
67/147 |
p = 0.003 |
|
Age at index surgery; years |
63 (52–69) |
47 (42–51) |
p < 0.001 |
|
Joint; hip/knee/other* |
39/47/3 |
202/12/0 |
p < 10-5 |
|
BMI |
29 (26–30) |
28 (25–30) |
p = 0.3 |
|
Type of PJI: |
|
|
|
| Early |
22 |
n.a. |
|
| Delayed |
39 |
n.a. |
|
| Haematogenous |
21 |
n.a. |
|
| Other |
7 |
n.a. |
|
|
Intraoperative culture: |
|
|
|
| Staphylococci |
54 |
n.a. |
|
| Other pathogens |
17 |
n.a. |
|
| Negative |
18 |
n.a. |
|
|
Primary diagnosis: |
|
|
p < 10-5 |
| Osteoarthritis |
68 |
58 |
|
| Dysplastic joint |
7 |
96 |
|
| Inflammatory arthritis |
3 |
10 |
|
| Other diagnoses |
11 |
50 |
|
|
Comorbidity: |
|
|
|
| DM |
11 |
18 |
p = 0.29 |
| RA |
2 |
11 |
p = 0.42 |
| other |
21 |
49 |
p = 1.0 |
| no | 55 | 136 | p = 0.77 |
Legend: Continuous data presented as median with interquartile (1st to 3rd) range in parentheses.
p values for comparison between the groups of patients with/without PJI were calculated by Chi-square test (Pearson’s) with appropriate degrees of freedom (d.f.), Fisher exact test or Mann–Whitney U test according to the type of data. *Shoulder, elbow.
BMI, body mass index; DM, diabetes mellitus; n.a., not applicable; RA, rheumatoid arthritis.