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Table 2 Characteristics of included studies

From: Does the critical shoulder angle decrease after acromioplasty? A systematic review and meta-analysis

Lead author (year)

Location

Total participant

Age (years)

Gender (male%)

Follow-up (months)

Study design (level of evidence)

Measurement method of CSA

Repair Technique

CSA threshold

Gerber (2017)

Switzerland

49

39–76

83.70%

30

Case Series(IV)

MRI

Arthroscopic lateral AP

NR

Billaud (2019)

France

90

41–76

61.10%

NR

Case Series(IV)

Radiographs

Arthroscopic anterior AP

NR

Franceschetti (2020)

Italy

289

57

46.70%

28

Retrospective comparative study(III)

Radiographs

Arthroscopic lateral AP

35

Long (2020)

China

60

NR

NR

12

Prospective comparative study(II)

3D-CT

Arthroscopic lateral and anterolateral AP

33

Olmos (2020)

France

90

58

60%

12

Retrospective comparative study(III)

Radiographs

Arthroscopic lateral AP

35

Girard (2020)

France

148

29–80

57.40%

NR

Case Series(IV)

Radiographs

Open anterior AP

35

MacLean (2020)

USA

71

58

64.80%

NR

Retrospective comparative study(III)

Radiographs

Arthroscopic lateral AP

35

Lin (2021)

Taiwan

337

64.2

47.50%

NR

Retrospective comparative study(III)

Radiographs

Arthroscopic anterolateral AP

38

Hardy (2020)

France

102

23–82

37.20%

NR

Case Series(IV)

Radiographs

Arthroscopic lateral AP

35

  1. NR, not reported; CSA, critical shoulder angle; AP, acromioplasty; MRI, magnetic resonance imaging; 3D-CT, three-dimensional computerized tomography