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Table 2 Basic characteristics of included studies

From: Posterior minimally invasive scoliosis surgery versus the standard posterior approach for the management of adolescent idiopathic scoliosis: an updated meta-analysis

Study

Year

Design

Group

Sample size

Age (years)

Gender (M/F)

Lenke classification

Fusion Levels

Preoperative Cobb (°)

Preoperative TK (°)

Follow-up (months)

Miyanji

2015

Retrospective

MISS

23

16.8 ± 0.4

3/20

1 (20); 2 (2); 4 (1)

10.2

56.7 ± 1.6

20.5 ± 2.1

24.0

PSF

23

16.4 ± 0.3

4/19

1 (12); 2 (8); 3 (3)

12.2

58.1 ± 1.6

22.6 ± 3.4

24.0

Sarwahi

2016

Retrospective

MISS

7

15.1 ± 3.2

1/6

1 (4); 2 (1); 5 (2)

10.0 ± 1.8

48.3 ± 8.3

20.7 ± 11.0

29.2 ± 2.3

PSF

15

15.4 ± 2.1

2/13

1 (6); 2 (1); 4 (4); 5 (2); 6 (2)

12.3 ± 1.6

46.7 ± 3.3

24.0 ± 9.8

37.0 ± 7.4

Zhu

2017

Retrospective

MISS

15

16.5 ± 1.6

2/13

5 (15)

4.9 ± 0.5

48.3 ± 4.2

20.2 ± 6.1

27.1 ± 4.0

PSF

30

15.1 ± 1.7

3/27

5 (30)

5.7 ± 0.5

50.9 ± 5.4

16.5 ± 6.8

32.9 ± 3.5

Urbanski

2019

Retrospective

MISS

4

15.5 ± 2.1

4/0

5 (4)

6.5 ± 0.9

57.3 ± 10.6

23.6 ± 7.6

NA

PSF

4

21.3 ± 10.0

3/1

5 (4)

5.8 ± 0.4

47.0 ± 7.8

37.0 ± 16.1

NA

Si

2020

Retrospective

MISS

64

13.2 ± 1.7

20/44

1 (18); 2 (12); 3 (19); 4 (15)

8.4 ± 2.3

50.7 ± 8.8

29.2 ± 9.4

31.2 ± 4.7

PSF

48

14.6 ± 1.9

14/34

1 (21); 2 (11); 3 (12); 4 (4)

6.2 ± 2.6

48.0 ± 8.4

28.7 ± 7.1

32.3 ± 6.3

Yang

2021

Retrospective

MISS

24

15.0 ± 1.9

0/24

1 (17); 3 (4); 5 (2); 6 (1)

12.3 ± 1.4

60.8 ± 9.4

35.0 ± 9.2

116.4 ± 0.0

PSF

25

14.0 ± 1.5

0/25

1 (13); 2 (1); 3 (7); 4 (1); 5 (1); 6 (2)

12.1 ± 1.5

62.1 ± 12.9

26.5 ± 12.1

55.2 ± 2.4

Sarwahi

2021

Retrospective

MISS

192

15.0 ± 1.9

25/167

NA

11.3 ± 2.2

55.7 ± 9.0

24.7 ± 12.7

 > 24.0

PSF

293

15.0 ± 2.4

66/227

NA

11.7 ± 2.2

53.3 ± 11.2

25.3 ± 12.7

 > 24.0

  1. TK thoracic kyphosis, MISS minimally invasive scoliosis surgery, PSF posterior spinal fusion, NA not available