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Table 3 Measured postoperative radiographic parameters in Groups I and II

From: Risk factors and outcomes in asymmetrical femoral component size for posterior referencing bilateral total knee arthroplasty: a matched pair analysis

Parameter Group I Group II P value
Asymmetrical femoral component (Different each patient) Symmetrical femoral component (Different each patient)  
AP femoral canal diameter (A’) (mm) 0.48 ± 0.44 0.60 ± 0.56 0.312
AP prosthesis diameter (B′) (mm) 2.33 ± 1.74 1.46 ± 1.05 0.015
Anterior femoral offset (C′) (mm) 1.13 ± 0.93 1.29 ± 0.99 0.500
Posterior femoral offset (D’) (mm) 2.23 ± 1.73 1.56 ± 1.12 0.066
ML prosthesis diameter (mm) 2.23 ± 1.41 0.72 ± 0.61 0.000
Femoral component flexion angle (8) (degrees) 2.18° ± 1.29° 1.36° ± 1.08° 0.007
Femoral component valgus angle (α) (degrees) 1.41° ± 1.13° 1.64° ± 1.67° 0.524
  1. data analyses were performed with Student’s t-test