Femoral Valgus Correction Angle for the Intramedullary Alignment Rod Is Strongly Associated with Femoral Lateral Bowing in Japanese Patients with Varus Knee Osteoarthritis Undergoing Total Knee Arthroplasty

Table 1

Patient demographics, clinical characteristics, and angular parameters.

Age (years)	74.0 ± 8.1	(42, 94)
Female (%)	81.1
BMI (kg/m^2)	25.8 ± 4.3	(15.7, 41.1)
FTA (^o)	183.4 ± 4.6	(167.8, 195.1)
Femoral offset (mm)	34.7 ± 4.4	(14.6, 46.0)
FBA	3.5 ± 3.2	(−4.5, 14.2)
MA-DFC angle (^o)	90.8 ± 2.6	(81.3, 98.3)
MA-SEA angle (^o)	90.6 ± 2.4	(84.4, 99.1)
VCA for the IM rod	5.9  ± 1.6	(1.7, 10.7)

Values are presented as the mean ± standard deviation (range). BMI: body mass index, FTA: femorotibial angle, FBA: femoral lateral bowing angle, MA-DFC angle: medial angle between the FMA and the DFC, FMA: femoral mechanical axis, DFC: the line that connects the distal margins of the medial and lateral femoral condyles, MA-SEA angle: medial angle between the FMA and the SEA, SEA: surgical epicondylar axis, VCA for the IM rod: femoral valgus correction angle for the intramedullary alignment rod.