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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 %
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