Table 2 Univariate analysis of risk factors associated with treatment failure of PTOa
Characteristics | Failure No. (%) (N = 38) | Remission No. (%) (N = 154) | P valuec |
|---|---|---|---|
Demographic data | |||
 Age (median [range]) (yr) | 70 (16 – 88) | 40.5 (11 – 86) | <0.001 |
 ≤40 years | 9 (23.6) | 77 (50) |  |
 41 – 60 years | 6 (15.8) | 55 (35.7) |  |
 61 – 80 years | 14 (37) | 20 (13) |  |
  ≥ 80 years | 9 (23.6) | 2 (1.3) |  |
 Male sex (no. [%]) | 19 (50) | 113 (73.4) | 0.005 |
 Household activities (no. [%]) | 20 (52.6) | 39 (25.3) | 0.001 |
Comorbidities (no. [%]) | |||
 Smoking | 11 (29.0) | 50 (32.5) | 0.676 |
Fall from height (no. [%]) | 23 (60.5) | 34 (22.0) | <0.001 |
Grade-III open fracture (no. [%]) | 6 (15.8) | 30 (19.5) | 0.602 |
Admission to surgery t >3h (no. [%]) | 36 (94.7) | 139 (90.2) | 0.532 |
>1 surgery debridement (no. [%]) | 23 (60.5) | 54 (35.0) | 0.004 |
Need for blood transfusion (no. [%]) | 23 (60.5) | 43 (28.0) | <0.001 |
Lower limb fractures (no. [%]) | 37 (97.3) | 116 (75.3) | 0.002 |
Bipolar hip prosthesis (no. [%]) | 8 (21.0) | 5 (3.2) | <0.001 |
ASA score | |||
 ASAb I - II (no. [%]) | 30 (79.0) | 145 (94.1) | 0.007 |
 ASA III - IV (no. [%]) | 9 (12.3) | 8 (7.3) | |
Chronic osteomyelitis (no. [%]) | 16 (42.1) | 84 (54.5) | 0.169 |
Staphylococcus aureus culture (no. [%]) | 25 (13%) | 79 (41.1%) | 0.010 |
Streptococcus sp. culture (no. [%]) | 4 (10.5) | 4 (2.6) | 0.051 |
Enterococcus sp. culture (no. [%]) | 8 (21.1) | 14 (9.1) | 0.048 |
Escherichia coli culture (no. [%]) | 6 (15.8) | 8 (5.2) | 0.036 |
Pseudomonas aeruginosa culture (no. [%]) | 17 (44.7) | 14 (9.1) | <0.001 |
Acinetobacter baumannii culture (no. [%]) | 10 (26.3) | 13 (8.4) | 0.005 |