Correlation in the Coronal Angle between Knee and Hindfoot Was Observed in Patients with Rheumatoid Arthritis Unless Talocrural Joint Was Destroyed

Figure 1

The hip-to-calcaneus (H-to-C) radiograph is shown in the left and the FTA was determined as shown. In the right radiograph, there is an enlargement of the left radiograph, the THFA, which is the internal angle of the tibial axis (solid white line). The dotted white line between the center of the talar dome and the lowest point of the calcaneus was measured.