Table 4.
Meta-analysis of subvastus (SV) versus standard parapatellar (SP) approach
| 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 | I 2 = 66 % |
| KSS 3 months | 4 | 196 | 195 | 1.03 [−10.28, 12.35]; p = 0.86 | I 2 = 0 % |
| KSS 12 months | 2 | 161 | 157 | 3.25 [−0.60, 7.10]; p = 0.10 | I 2 = 0 % |
| VAS 1 weeks | 2 | 132 | 133 | −0.56 [−1.42, 0.29]; p = 0.19 | I 2 = 98 % |
| VAS 4–6 weeks | 3 | 182 | 175 | −0.13 [−0.44, 0.19]; p = 0.44 | I 2 = 85 % |
| VAS 3 months | 3 | 182 | 177 | −0.03 [−0.32, 0.27]; p = 0.87 | I 2 = 84 % |
| VAS 6 months | 2 | 165 | 159 | −0.14 [−0.28, −0.01]; p = 0.04 | I 2 = 0 % |
| Total Complication | 6 | 329 | 315 | 0.81 [0.44, 1.49]; p = 0.49 | I 2 = 0 % |
| Wound infection | 6 | 242 | 233 | 1.11 [0.40, 3.08]; p = 0.85 | I 2 = 0 % |
| Deep vein thrombosis | 5 | 288 | 276 | 5.04 [0.24, 106.22]; p = 0.30 | I 2 = 0 % |
| ROM 1 week | 3 | 163 | 166 | 3.96 [3.20, 4.72]; p < 0.05 | I 2 = 0 % |
| ROM 4–6 weeks | 4 | 230 | 225 | 3.79 [−0.44, 8.03]; p = 0.08 | I 2 = 68 % |
| ROM 3 months | 4 | 230 | 225 | 3.24 [−0.90, 7.38]; p = 0.12 | I 2 = 72 % |
| ROM 12 months | 3 | 214 | 206 | 6.80 [0.94, 12.66]; p = 0.02 | I 2 = 87 % |
| Straight leg raise | 2 | 59 | 61 | −2.77 [−4.07, −1.47]; p < 0.05 | I 2 = 64 % |
| Operative time | 2 | 46 | 46 | 0.11 [−10.37, 10.58]; p = 0.98 | I 2 = 60 % |
| Lateral retinacular release | 4 | 217 | 211 | 0.34 [0.14, 0.79]; p = 0.01 | I 2 = 0 % |
| Blood loss | 3 | 81 | 81 | −100.76 [−223.42, 21.89]; p = 0.11 | I 2 = 74 % |