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Table 2 The basic characteristics description of included studies

From: 3D printing-assisted extended lateral approach for displaced intra-articular calcaneal fractures: a systematic review and meta-analysis

Authors

Years

Patients cases

Average age

Sanders typing

Type of study

Follow-up time

Outcomes

Man/female

3D/conventional group

II/III/IV

Chen et al. [37]

2017

53/27

38.00 ± 8.30/36.80 ± 8.20

52/28/0

Retro

20 weeks

a c d

Duan et al. [38]

2019

26/19

35.70 ± 8.40/36.50 ± 8.20

31/14/0

Retro

Not mentioned

a b

He et al. [39]

2017

39/33

38.50 ± 7.60/38.20 ± 6.70

0/25/11

RCT

Not mentioned

a b c e

Li et al. [16]

2020

67/38

36.82 ± 11.02/36.17 ± 10.13

0/58/47

Retro

6 months

a b c d e

Shen et al. [17]

2018

26/10

36.82 ± 11.02/36.17 ± 10.13

0/17/19

RCT

15 months

a b d

Song et al. [40]

2020

32/24

37.02 ± 8.15/36.82 ± 7.76

0/35/21

RCT

6 months

c e

Zheng et al. [41]

2017

44/31

46.70 ± 6.20/44.50 ± 8.00

28/29/18

Retro

15 months

a b c d e

Wu et al. [42]

2015

27/17

36.68 ± 11.26/35.68 ± 11.32

22/22/0

Retro

Not mentioned

a b d e

Xiong et al. [43]

2018

37/23

38.60 ± 7.17/38.56 ± 7.52

0/41/19

Retro

Not mentioned

a b c e

Zhong et al. [44]

2017

23/13

40.0 ± 10.00/39.00 ± 8.00

13/16/7

Retro

10–12 months

a c e

Zhang et al. [10]

2019

23/16

37.50 ± 7.40/36.20 ± 8.50

26/13/0

Retro

6 months

a b c e

Zheng et al. [45]

2018

39/33

37.50 ± 6.50/37.45 ± 6.55

0/43/23

Retro

Not mentioned

a b c e

  1. Outcome indicators: a. operation duration; b. intraoperative blood loss; c. postoperative complications; d. the number of X-ray exposures; e. the rate of excellent and good outcome