STEP 1: Have someone hold up each of your horse’s four feet, and take a picture of the solar view of each foot. It may be helpful to use a marker and write “LF” on the sole of the left front, “RF” on the right front, and so on, to help keep your pictures straight.
STEP 2: Print out your pictures.
STEP 3: Draw a box that goes from the inside edge of the back of the heels, then straight down to the toe.
STEP 4: Draw a line from the edge of the box to the widest part of the foot on the left side of the box (blue lines in figure 6.27). Repeat on the right (green lines).
STEP 5: Using a ruler, measure the lines you have just drawn outside the box, and draw lines of those lengths inside the box, giving them space to overlap.
STEP 6: What you want to see is that the width of the box is equal to or wider than the parts outside the box put together. That means that if your lines overlap, you are likely dealing with some contraction.
The Essential Hoof Book is available from Trafalgar Square Books.