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Table 2 Comparison of operative and non-operative group

From: Risk factors associated with infection recurrence of posttraumatic osteomyelitis treated with Ilizarov bone transport technique—a retrospective study of 149 cases

Demographic data

Surgical treatment(n = 12)

No surgical treatment(n = 5)

p-value

Sex

 Male/Female

10(83.3%)/2(16.7%)

4(80.0%)/1(20.0%)

1.000

Age

42.4 ± 9.7

40.6 ± 8.6

0.722

Smoking

4(33.3%)

1(20.0%)

1.000

Diabetes

5(41.7%)

1(20.0%)

0.600

Course of osteomyelitis

 (>  3 months)

11(91.7%)

5(100.0%)

1.000

Previous operation time

4.0 ± 1.5

3.8 ± 0.8

0.782

Bone exposure

11(91.7%)

4(80.0%)

0.515

Preoperative Lab result

 WBC and ESR/CRP

7.5 ± 2.4and 4.3 ± 4.2/11.1 ± 3.1

8.0 ± 1.5and 25.5 ± 1.3/11.8 ± 1.8

0.657and 0.555/0.657

Type of external fixator

 Ring/Monolateral

9(75.0%)/3(25.0%)

4 (80.0%)/1(20.0%)

0.538

Size of bone defect

6.2 ± 1.6

7.3 ± 2.3

0.268

Average recurrent time (months)

9.9 ± 2.8

13.0 ± 2.4

0.043

Level of bone transport

 Single/Double

10(83.3%)/2(16.7%)

3(60.0%)/2(40.0%)

1.000

Flap coverage

1(8.3%)

3(60.0%)

0.053

Intraoperative blood transfusion

6(50.0%)

3(60.0%)

1.000

Microbiological result

 Pseudomonas aeruginosa

9 (75.0%)

0 (0%)

0.009

 Staphylococcus aureus (include MRSA)

3(25.0%)

2(40.0%)

0.600

  1. WBC:white blood count; CRP:C-reactive protein; ESR:erythrocyte sedimentation rate; MRSA: methicillin-resistant Staphylococcus aureus