The Plantar Fascia Explained

In brief: The plantar fascia is the thick band of connective tissue that runs along the sole from the heel to the toes, supporting the arch and helping the foot spring forward. It is a key part of foot anatomy and is often discussed because of the strain runners can place on it.

What is the plantar fascia?

The plantar fascia is a strong, fibrous band of connective tissue that stretches along the bottom of the foot, connecting the heel bone to the base of the toes. It forms part of the support system for the arch and helps the foot behave like a lever during push-off.

Why it matters

The plantar fascia helps hold the arch in shape and stores energy as the foot loads, releasing it as you toe off. Because it takes high loads when running and walking, it is one of the most discussed parts of foot anatomy.

How it works

As the toes bend upward at the end of a stride, the fascia tightens and raises the arch, a mechanism that makes the foot rigid for an efficient push-off. As the foot lands and flattens, the fascia stretches to help absorb load.

What to look for

Supportive footwear, a gradual increase in mileage and good calf and foot flexibility all help the plantar fascia cope with running loads. Inflammation of this tissue is a separate injury topic covered elsewhere in the glossary.

The plantar fascia and your running kit at OD's

Cushioned, supportive shoes can ease the load on the sole of the foot. The team in St Helens can show you comfortable options, and we offer next-day delivery and free click and collect.