Table 3 Meta-analysis of quadriceps-sparing (QS) versus standard parapatellar (SP) approach

KSS 4–6 weeks

3

101

108

−0.91 [−3.08, 1.25]; p = 0.41

I² = 0 %

KSS 3 months

2

138

138

2.88 [1.17, 4.60]; p = 0.001

I² = 0 %

KSS 2 year

2

155

155

1.75 [0.45, 3.06]; p = 0.008

I² = 0 %

VAS 1 weeks

4

124

129

−0.69 [−1.10, −0.29]; p < 0.05

I² = 32 %

VAS 4–6 weeks

3

104

110

0.14 [−0.29, 0.58]; p = 0.52

I² = 0 %

Total Complication

6

279

287

1.00 [0.21, 4.72]; p = 0.49

I² = 0 %

Wound infection

6

279

287

1.05 [0.39, 2.85]; p = 0.85

I² = 0 %

Deep vein thrombosis

6

279

287

0.67 [0.16, 2.92]; p = 0.30

I² = 0 %

ROM 1 week

2

64

70

5.79 [−6.26, 17.85]; p = 0.35

I² = 89 %

ROM 4–6 weeks

3

99

105

3.83 [−2.81, 10.46]; p = 0.26

I² = 84 %

ROM 3 months

2

146

153

4.37 [−6.41, 15.14]; p = 0.43

I² = 96 %

ROM 12 months

2

66

76

10.08 [−7.56, 27.72]; p = 0.26

I² = 96 %

ROM 24 months

4

233

235

−0.18 [−1.91, 1.56]; p = 0.84

I² = 0 %

Operative time

7

319

327

18.22 [9.92, 26.51]; p < 0.05

I² = 93 %

Blood loss

4

220

222

0.80 [−39.34, 40.93]; p = 0.97

I² = 0 %

Hospital stay

4

215

217

−0.68 [−1.48, 0.12]; p = 0.10

I² = 82 %