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Table 1 Comparison of background characteristics between LIPUS and non-LIPUS groups

From: Can low-intensity pulsed ultrasound (LIPUS) accelerate bone healing after intramedullary screw fixation for proximal fifth metatarsal stress fractures? A retrospective study

 

Non-LIPUS treatment group

LIPUS treatment group

P value

No. of patients (feet)

42 (44)

53 (57)

 

Age at surgery (years)

20.0 ± 5.3

18.9 ± 4.0

0.07

Sex (no. of feet)

Male

42

54

1.00

Female

2

3

Height (cm)

174.3 ± 6.0

174.1 ± 5.8

0.97

Weight (kg)

69.7 ± 9.7

69.6 ± 8.0

0.98

Tegner activity scale

8.0 ± 1.0

9.0 ± 0.6

0.38

Smoking (no. of feet)

+

0

1

1.00

44

56

Torg’s classification (no. of feet)

Type 1

9

10

0.66

Type 2

30

43

Type 3

5

4

Time from injury to surgery (days)

17.8 ± 28.9

19.2 ± 27.5

0.95

  1. LIPUS Low-intensity pulsed ultrasound
  2. * P value < 0.05