Ask the Doctor
I always thought I had just one arch in my foot, but now I hear I have four. Is that true?
Yes! Many people think there is just one arch in the foot, but there are actually four arches.
- Inner (medial) Longitudinal Arch: This Arch runs along the inside of your foot from the ball of your foot to your heel. The Inner Longitudinal Arch is the most important arch when being sized for arch supports because this arch is as individual as you are! Your Inner Longitudinal Arch is unique in length and height. This is one of the primary reasons that your feet need personal sizing when choosing an arch support. The inner arch is flexible.
- Outer (lateral) Longitudinal Arch: The Outer Longitudinal Arch is the arch that runs along the outside of your foot. This arch is rigid and stabilizes the foot when you bear weight.
- Transverse Arch: The Transverse Arch is situated across your heel behind your in-step. Since it's inside your foot it's the only arch that you cannot see. When you step, this arch is the first arch to make contact with the ground, thus, it acts as your body's primary shock absorber.
- Metatarsal Arch: This arch is formed by the five metatarsal heads across the ball of your foot and is supported by a combination of muscles and ligaments. It acts much like your hand does.