Use of the Brannock Device to detect differences in foot length in patients with traumatic nail disease

Supplemental Figure 1: Diagram of the Brannock device and its features.
Before using the device, the moveable arch length pointer and width adjustor are positioned at their slid back and at their widest point, respectively. The patient stands with the heel flush to the heel cup and equal weight distributed between the two feet. Toe length is determined by measuring to the end of the longest toe, while arch length is measured using the arch length pointer and positioning it against the ball joint of the foot. Shoe size is determined based on both heel-to-toe measurement and arch measurement. Width is measured by using the width bar, which is positioned firmly against the edge of the foot. The device is then re-positioned such that the other end is used to measure the opposite foot.

补充图1：Brannock测量仪的示意图及其特性。在使用该设备之前，可移动的弓形长度指示器和宽度调节器分别置于其滑动后的位置和最宽处。患者站立时，脚跟与脚杯贴合，两脚均匀分配体重。脚趾长度通过测量最长脚趾的末端来确定，而足弓长度则通过使用足弓长度指示器进行测量，并将其置于脚的关节球部。鞋码基于脚跟至脚趾的测量和足弓测量来确定。宽度通过使用宽度条进行测量，该宽度条需稳固地置于脚的边缘。随后，设备重新定位，以便使用另一端来测量另一只脚。