Table 3 Patient demographics and fracture pattern and union rate in patients with a comminuted femoral shaft fracture treated using an interlocking nail with and without bone union

Age

27.85 ± 13.69

29.67 ± 12.81

0.596

Sex

0.352

 Male

28

17

 Female

19

7

Smoking

11

6

0.882

BMI

23.00 ± 4.65

24.73 ± 4.14

0.140

Open fracture

8

4

0.970

Brain injury

5

6

0.113

Bilateral femur involvement

5

1

0.354

Classification

0.576

 32B

41

22

 32C

6

2

Fragment number

1.47 ± 0.74

1.25 ± 0.52

0.207

Largest fragment size (mm)

76.05 ± 32.60

75.85 ± 29.46

0.560

Proximal displacement (mm)

 Preoperative

16.52 ± 12.20

19.51 ± 17.07

0.404

 Postoperative

5.05 ± 3.11

5.23 ± 4.08

0.841

Distal displacement (mm)

 Preoperative

15.80 ± 9.47

18.78 ± 14.89

0.316

 Postoperative

5.56 ± 3.15

4.55 ± 4.09

0.259

Nail size

11.13 ± 1.06

11.48 ± 1.02

0.202