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Table 2 Quality assessment of included studies

From: Malalignment and malposition of quadriceps-sparing approach in primary total knee arthroplasty: a systematic review and meta-analysis

Study/year

Study design

Tool

Quality score

Chiang 2012

RCT

a

7

Yang 2010

RCT

a

7

Karpman 2009

RCT

a

7

Kim 2007

RCT

a

4

Chin 2007

RCT

a

7

Huang 2016

Retrospective

b

7

Qi 2016

Retrospective

b

7

Shen 2007

Retrospective

b

8

Huang 2007

Retrospective

b

7

King 2007

Retrospective

b

8

Tashiro 2007

Retrospective

b

7

Chen 2006

Retrospective

b

7

Kim 2006

Retrospective

b

8

  1. aCochrane risk of bias tool
  2. bModified Newcastle-Ottawa Scale