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

Table 3 Measured postoperative radiographic parameters in Groups I and II

Parameter	Group I	Group II	P value^†
Parameter	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

ISSN: 1471-2474