The Subtalar Joint Explained

In brief: The subtalar joint sits just below the ankle and allows the foot to roll inward and outward. It is the joint mainly responsible for pronation and supination, so it plays a central role in how the foot absorbs impact and adapts to the ground.

What is the subtalar joint?

The subtalar joint is the joint just below the main ankle joint, between the bone that forms the ankle and the heel bone beneath it. While the ankle moves the foot up and down, the subtalar joint allows it to roll inward and outward.

Why it matters

The subtalar joint is the main joint responsible for pronation and supination, the inward and outward rolling of the foot. This makes it central to how the foot absorbs impact, adapts to uneven ground and transfers load through a stride.

How it works

As the foot lands, the subtalar joint lets it roll inward to cushion the impact, then helps it stiffen and roll back for push-off. The amount and control of this movement varies between runners and underlies terms like overpronation.

What to look for

Stability shoes work largely by influencing motion at and around the subtalar joint to manage excessive inward roll. A secure rearfoot fit helps the joint move in a controlled way.

The subtalar joint and your running kit at OD's

How a shoe manages foot roll comes back to this joint. The team in St Helens can explain neutral versus stability options, and we offer next-day delivery and free click and collect.