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Table 3 Primary 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 beyond 24 months

4

330

329

-0.02 (− 0.69, 0.65)

0.95

0%

KS Function Score beyond 24 months

3

186

185

1.78 (0.80, 2.76)

0.0004

0%

ROM beyond 16 months

6

400

404

0.08 (−1.40, 1.57)

0.91

4%

Complications

10

464

430

0.87 (0.49, 1.54)

0.63

9%

Infections

10

503

515

1.53 (0.69, 3.39)

0.29

0%

Mechanical axis outliers

5

257

266

1.05 (0.65, 1.72)

0.83

27%

Femoral component coronal angle outliers

4

237

235

2.30 (0.35, 15.24)

0.39

65%

Tibial component coronal angle outliers

5

337

280

0.73 (0.40, 1.33)

0.30

40%

Mechanical axis

5

149

147

0.35 (−0.02, 0.73)

0.07

0%

Femoral component coronal angle

6

395

395

0.23 (− 0.90, 1.35)

0.69

92%

Tibial component coronal angle

7

495

445

-0.40 (−1.29, 0.49)

0.38

92%

Lateral patellar tilt

5

418

363

-1.25 (−3.36, 0.85)

0.24

78%

Lateral patellar displacement

2

131

75

-1.47 (−4.59, 1.66)

0.36

90%

  1. TKA total knee arthroplasty, BMI body mass index, QS quadriceps-sparing, MP medial parapatellar, WMD weighted mean difference, OR odds ratio, CI confidence interval, KS knee society, ROM range of motion