Relationship between Tibial Baseplate Design and Rotational Alignment Landmarks in Primary Total Knee Arthroplasty

Table 2

Computed tomography (CT) results. sTEA: surgical transepicondylar axis; ER: external rotation with respect to sTEA projected to the tibia; statistically significant difference ().

Tibial baseplate		Average ER	0 ± 5° sTEA	0 ± 3° sTEA	0 ± 2° sTEA
Symmetric (Design 1)	40	1.32° (5°/−1°)	100%	90%	77,5%
Asymmetric (Design 2)	40	4.15° (0,46°/8,99°)	77%	47,5%	27,5%