Figure 2
From: Deep learning-based tool affects reproducibility of pes planus radiographic assessment
A weightbearing lateral radiograph of a normal foot of a 53Â year old female, showing measurement of the Meary angle and calcaneal pitch. (a) Meary angle is the angle between the long axis of the talus and the long axis of the first metatarsus. First, the longitudinal axis of the talus is a line drawn through two mid-points. (Green line) One is a mid-point between the cephalad and caudad margins of the talar body, (Longer light green line) and the other is a mid-point between the cephalad and caudad margins of talar neck. (Shorter light green line) The metatarsus axis was determined using the following method. The long axis of the first metatarsus (Yellow line) is drawn by connecting two mid-points equidistant from the cephalad and caudad margins of the first metatarsus at the proximal and distal metaphysial diaphysial junction (blue lines). (b) Calcaneal pitch is the angle formed between the line outlining the inferior border of the calcaneus (yellow line) and the weight bearing surface (green line).
