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Table 2 Demographic and perioperative characteristics

From: Association between anterior bone loss and anterior heterotopic ossification in hybrid surgery

Variables

AHO Group

Non-AHO Group

P Value

No. of patients (n)

17

80

 

Age (years)

48.7 ± 7.2

48.5 ± 6.8

0.927

Gender (M/F)

5 / 12

29 / 51

0.781

BMI (kg/m2)

24.9 ± 2.8

24.2 ± 3.0

0.398

BMD T value (spine)

0.2 ± 1.3

0.5 ± 1.2

0.352

Serological indicator

 Pre-ALP

71.6 ± 26.0

66.4 ± 18.5

0.331

 Post-ALP

62.1 ± 21.3

59.2 ± 15.8

0.521

Arthroplasty segment

  

0.736

 C3/4

0

2

 

 C4/5

8

36

 

 C5/6

3

21

 

 C6/7

6

21

 

Fusion location

  

0.591

 Up

8

31

 

 Down

9

49

 

Operation time (minutes)

150.0 ± 26.8

134.6 ± 24.4

0.324

Blood loss (ml)

69.4 ± 48.1

66.1 ± 48.0

0.799

Follow-up time (months)

37.0 ± 17.3

37.7 ± 13.7

0.851

  1. AHO anterior heterotopic ossification, BMI body mass index, BMD bone mineral density, Pre-ALP preoperative alkaline phosphatase, Post-ALP Immediate postoperative alkaline phosphatase
  2. * P < 0.05