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Table 4 Meta-analysis of subvastus (SV) versus standard parapatellar (SP) approach

From: Comparison of the quadriceps-sparing and subvastus approaches versus the standard parapatellar approach in total knee arthroplasty: a meta-analysis of randomized controlled trials

Outcomes

Studies

TKAs (SV/SP)

MD or OR [95 % CI]; p value

Heterogeneity

KSS 4–6 weeks

2

128

127

−1.86 [−8.59, 4.88]; p = 0.59

I2 = 66 %

KSS 3 months

4

196

195

1.03 [−10.28, 12.35]; p = 0.86

I2 = 0 %

KSS 12 months

2

161

157

3.25 [−0.60, 7.10]; p = 0.10

I2 = 0 %

VAS 1 weeks

2

132

133

−0.56 [−1.42, 0.29]; p = 0.19

I2 = 98 %

VAS 4–6 weeks

3

182

175

−0.13 [−0.44, 0.19]; p = 0.44

I2 = 85 %

VAS 3 months

3

182

177

−0.03 [−0.32, 0.27]; p = 0.87

I2 = 84 %

VAS 6 months

2

165

159

−0.14 [−0.28, −0.01]; p = 0.04

I2 = 0 %

Total Complication

6

329

315

0.81 [0.44, 1.49]; p = 0.49

I2 = 0 %

Wound infection

6

242

233

1.11 [0.40, 3.08]; p = 0.85

I2 = 0 %

Deep vein thrombosis

5

288

276

5.04 [0.24, 106.22]; p = 0.30

I2 = 0 %

ROM 1 week

3

163

166

3.96 [3.20, 4.72]; p < 0.05

I2 = 0 %

ROM 4–6 weeks

4

230

225

3.79 [−0.44, 8.03]; p = 0.08

I2 = 68 %

ROM 3 months

4

230

225

3.24 [−0.90, 7.38]; p = 0.12

I2 = 72 %

ROM 12 months

3

214

206

6.80 [0.94, 12.66]; p = 0.02

I2 = 87 %

Straight leg raise

2

59

61

−2.77 [−4.07, −1.47]; p < 0.05

I2 = 64 %

Operative time

2

46

46

0.11 [−10.37, 10.58]; p = 0.98

I2 = 60 %

Lateral retinacular release

4

217

211

0.34 [0.14, 0.79]; p = 0.01

I2 = 0 %

Blood loss

3

81

81

−100.76 [−223.42, 21.89]; p = 0.11

I2 = 74 %