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Table 4 Secondary outcomes of meta-analysis results

From: Quadriceps-sparing versus traditional medial parapatellar approaches for total knee arthroplasty: a meta-analysis

Outcomes of Demographics Number of Contributing Studies Number of QS TKAs Number of MP TKAs WMD or OR (95% CI) P - Value Heterogeneity
KS Knee Score 1.5–3 months 4 204 212 1.27 (− 0.57, 3.11) 0.18 57%
KS Function Score 1.5–3 months 4 204 212 −0.09 (−3.98, 3.81) 0.97 73%
ROM 1–2 weeks 5 148 162 5.84 (3.84, 7.83) < 0.00001 21%
ROM 4–8 weeks 7 283 247 0.51 (−1.90, 2.91) 0.68 61%
ROM 3 months 2 152 158 −0.60 (−2.32, 1.12) 0.50 47%
ROM 12 months 2 58 68 4.00 (−5.80, 13.80) 0.42 90%
VAS 1 day 6 183 197 −0.91 (−1.68, − 0.41) 0.02 81%
VAS 3 days 2 64 70 −0.93 (−2.01, 0.14) 0.09 82%
VAS 4–8 weeks 3 84 89 −0.26 (−1.13, 0.61) 0.56 77%
Surgical time (min) 8 507 450 12.02 (4.06, 19.98) 0.003 95%
Tourniquet time (min) 8 447 462 27.19 (9.17, 45.22) 0.003 99%
Intraoperative blood loss (ml) 4 334 339 1.99 (−14.28, 18.25) 0.81 0%
Total blood loss (ml) 5 255 254 −42.94 (−150.57, 64.70) 0.43 90%
Incision, extension (cm) 7 276 284 −4.62 (−6.35, −2.90) < 0.00001 99%
Incision, flexion (cm) 3 193 192 −1.90 (−3.99, 0.19) 0.07 99%
Length of stay (days) 8 433 441 −0.88 (−1.62, −0.15) 0.02 94%
SLR at 24 h (% of patients) 3 105 107 3.05 (0.89, 10.53) 0.08 75%
  1. VAS, visual analogue scale; SLR, straight leg rising