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Table 3 Demographics and fracture characteristics of patients receiving antegrade or retrograde IMN

From: Does nail size or difference between canal and nail diameter influence likelihood of union or time to union of femoral shaft fractures treated with intramedullary nailing? A retrospective cohort study

 

A/R

P value

A

R

Sample Size

242

15

 

Age

32.6 ± 16.4

47.6 ± 20.9

0.016

 Age > 50

39(16.1%)

7(46.7%)

0.003

Gender

 F

89(36.8%)

6(40%)

0.802

 M

153(63.2%)

9(60%)

CN difference

 < 1 mm

135(55.8%)

8(53.3%)

1.000

 1 ~ 2 mm

75(31%)

4(26.7%)

1.000

 > 2 mm

32(13.2%)

3(20%)

0.438

Nail size

 10 mm

103(42.6%)

10(66.7%)

0.119

 11 mm

71(29.3%)

3(20%)

0.565

 12 mm

53(21.9%)

1(6.7%)

0.206

 13 mm

15(6.2%)

1(6.7%)

1.000

AO/OTA 32

 32A

196(81%)

10(66.7%)

0.177

 32B

46(19%)

5(33.3%)

BMI

24 ± .9

29.7 ± 7.9

0.007

 BMI > 30

25(10.3%)

6(40%)

0.001

smoking

61(25.2%)

3(20%)

0.651

alcohol

51(21.1%)

3(20%)

0.921

DM

11(4.5%)

1(6.7%)

0.706

Union time

5.7 ± 2.2

6.7 ± 2.7

0.101

nonunion

6(2.5%)

2(13.3%)

0.019