Table 1 Demographic data of patients in the two groups

Number

37

39

Gender(male/female)

10/27

14/25

0.405

Age (years)

55.2 ± 10.8

58.1 ± 7.5

0.176

BMI (kg/m2)

24.73 ± 2.94

25.14 ± 3.79

0.601

BMD(T-score)

−1.95 ± 1.05

−2.01 ± 0.79

0.778

Meyerding grade

I° (n = 24)

I° (n = 24)

0.764

II° (n = 13)

II° (n = 15)

  > 2 cm but ≤5 cm

67.6%(n = 25)

64.1%(n = 25)

0.750

  > 5 cm but ≤10 cm

32.4%(n = 12)

35.9%(n = 14)

Follow-up (months))

16.95 ± 4.16

17.33 ± 3.81

0.679

Operative time (min)

158.03 ± 27.19

187.10 ± 37.41

0.000

Blood loss (ml)

166.76 ± 57.54

214.87 ± 75.67

0.003

Total cost (USD)

10,670 ± 1658

12,054 ± 1967

0.028