Plantar fasciitis is one of the most common causes of heel pain. People typically notice it when they take their first steps out of bed in the morning or when they stand after sitting for a prolonged period. The pain often eases after walking for a few minutes, only to return again after periods of rest.

What is the plantar fascia?

The plantar fascia is a strong band of connective tissue that runs from the heel bone (calcaneus) to the base of the toes. Its primary function is to help support the arch of the foot.

When you walk, run or land from a jump, the plantar fascia becomes tensioned, helping the arch maintain its shape and absorb forces. Without this support, the bones of the midfoot would be subjected to much greater mechanical stress.

A healthy plantar fascia is not designed to remain under constant tension. Instead, it should be relatively relaxed at rest and become taut only when required during movement and weight-bearing activities.

Why does plantar fasciitis develop?

The term plantar fasciitis literally means inflammation associated with the plantar fascia. Although the pain is felt in the heel, the discomfort is usually concentrated where the plantar fascia attaches to the heel bone.

Rather than viewing plantar fasciitis as simply an isolated heel problem, it is often more helpful to consider why the plantar fascia has become overloaded in the first place.

In many people, the ligaments and muscles of the foot provide enough stability to support the arch without excessive strain on the plantar fascia. However, if the alignment of the foot changes, the plantar fascia may remain under tension for much longer than it was designed to.

One of the most common contributing factors is excessive pronation of the foot and ankle. As the foot rolls inward, the plantar fascia may become progressively tensioned throughout standing and walking instead of only during the phases when it is normally required.

An easy way to understand the problem

Imagine holding a single strand of long hair with a heavy weight attached to the end.

The hair itself is not painful.

The pain would occur where the hair is anchored into the scalp because that attachment point is constantly being pulled.

Once the weight is removed, the strain at the attachment point disappears.

The plantar fascia behaves in a similar way. The discomfort usually develops where the fascia attaches into the heel bone rather than within the fascia itself. If excessive tension continues day after day, this attachment site can become irritated and painful.

Why is the pain worse in the morning?

Many people notice that the first few steps in the morning are the most painful.

After sleeping or sitting for a prolonged period, blood flow and tissue fluid movement slow down. When the foot is suddenly loaded, the already irritated attachment of the plantar fascia is placed under tension again, producing the characteristic sharp heel pain.

As you begin walking, the calf muscles act as a pump, improving circulation through the lower leg and foot. This often reduces discomfort temporarily, which explains why many people feel better after several minutes of walking.

Treating the cause—not just the symptoms

While heel cushions, supportive insoles and stretching programmes may provide symptom relief for some individuals, long-term improvement depends on identifying and correcting the mechanical cause of the overload.

If excessive pronation or another alignment abnormality is placing unnecessary tension on the plantar fascia, simply adding cushioning beneath the heel may not adequately address the underlying problem.

A corrective orthotic is designed to improve foot and ankle alignment rather than simply support the arch. Because every person walks differently, the correction required for the left foot is often different from that required for the right foot. The amount of correction should therefore be individually prescribed.

As the abnormal strain on the plantar fascia is reduced over time, the attachment at the heel is given the opportunity to recover, allowing symptoms to gradually settle while also addressing the underlying biomechanical problem that contributed to the condition.

The key message

Plantar fasciitis should not simply be viewed as inflammation of the heel. In many cases, it is the result of an underlying mechanical imbalance that places excessive and prolonged tension on the plantar fascia where it attaches to the heel bone.

Successful long-term treatment focuses on identifying the biomechanical cause, correcting the alignment of the foot and ankle, and reducing the abnormal forces responsible for the condition. By addressing the underlying mechanics rather than simply cushioning the symptoms, many patients can achieve lasting relief and reduce the likelihood of recurrence.

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