Changes in Coronal Alignment of the Knee Joint after Supramalleolar Osteotomy

Figure 2

(a) Weight-bearing ankle anteroposterior view showing measurement of the lateral distal tibial angle (LDTA), tibiotalar angle (TTA), and talar tilt angle. The tibial axis was drawn by bisecting two pairs of points along the tibial shaft cortex, drawn 100 and 150 mm proximal to the tibial plafond. (b) Weight-bearing knee anteroposterior view showing measurement of the medial proximal tibial angle (MPTA), joint line convergence angle (JLCA), and medial and lateral joint space widths. The tibial axis was drawn by bisecting two pairs of points along the tibial shaft cortex, drawn 100 and 150 mm distal to the tibial plateau. (c) Full-length anteroposterior radiograph of the lower extremity showing measurement of the mechanical axis deviation angle (MADA) and hip-knee-ankle (HKA) angle. (d) Weight-bearing knee anteroposterior view showing correction angle after SMO.

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