Fig. 1From: Association between knee alignment, osteoarthritis disease severity, and subchondral trabecular bone microarchitecture in patients with knee osteoarthritis: a cross-sectional studyMeasurement of knee alignment (hip-knee-ankle angle) based on full-leg standing anteroposterior radiographs. a The center of the femoral head. b The center of the femoral condyles. c The center of the tibial plateau. d The center of the superior surface of the talusBack to article page