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Table 2 Comparison of clinical outcomes between the two groups

From: Clinical observation of two bone cement distribution modes of percutaneous vertebroplasty in the treatment of thoracolumbar Kümmell’s disease

Parameters

Blocky group

Spongy group

t/χ2

P

Follow-up time(months)

37.6 ± 6.59

37.6 ± 6.86

− 0.077

0.939

Amount of bone cement injected(ml)

4.7 ± 1.55

4.0 ± 1.16

3.897

0.000

Operation time (min)

38.9 ± 5.52

38.7 ± 5.05

0.864

0.388

Intraoperative blood loss (ml)

20.8 ± 2.94

20.7 ± 3.39

0.438

0.661

Fluoroscopy times

18.1 ± 2.85

18.1 ± 3.31

− 0.237

0.813

Bone cement leakage(%)

16.67

21.21

0.211

0.646

 Yes (cases)

5

7

  

 No (cases)

25

26

  

VAS

 Before surgery

8.2 ± 1.43

7.9 ± 1.72

1.646

0.100

 On the first day after surgery

3.1 ± 0.92*

2.4 ± 0.66*

5.401

0.000

 At the first year after surgery

3.5 ± 0.88*

2.6 ± 0.82*

6.508

0.000

 At the last follow-up

3.6 ± 0.88*

2.8 ± 0.80*

7.031

0.000

ODI

 Before surgery

72.6 ± 10.89

70.5 ± 10.03

5.293

0.162

 On the first day after surgery

29.4 ± 5.42*

24.4 ± 5.13*

24.533

0.000

 At the first year after surgery

29.8 ± 5.39*

24.9 ± 5.01*

25.407

0.000

 At the last follow-up

29.9 ± 5.41*

25.0 ± 5.56*

22.872

0.000

Adjacent vertebral fractures(%)

16.67

9.09

0.814

0.367

Yes (cases)

5

3

  

 No (cases)

25

30

  

Correction degree of vertebral compression

 On the first day after operation

25.7 ± 4.28

20.4 ± 4.70

21.962

0.000

 At the first year after operation

22.8 ± 4.92#

19.6 ± 3.63

13.281

0.000

 At the last follow-up

21.5 ± 4.29&@

18.9 ± 3.47#

11.952

0.000

Correction degree of kyphosis

    

 On the first day after operation

26.3 ± 5.34

21.6 ± 5.69

22.467

0.000

 At the first year after operation

23.4 ± 5.24#

20.1 ± 5.26#

17.093

0.000

 At the last follow-up

21.5 ± 5.17&@

19.3 ± 5.19&

14.509

0.001

  1. *Compared to before surgery, P = 0.000
  2. #Compared to the first day after operation, P < 0.05
  3. &Compared to the first day after operation, P = 0.000
  4. @Compared to the first year after operation, P < 0.05