Orthotic insoles are shoe inserts designed to support the foot, redistribute pressure and influence how the foot functions during standing and walking.

They may be used to improve comfort, reduce stress through painful areas and provide greater stability inside footwear. Depending on their design, orthotic insoles can support the arch, control excessive foot movement or cushion areas exposed to repeated pressure.

Unlike a basic cushioning insole, an orthotic usually has a more structured shape. However, orthotics are not intended to permanently change the shape of the foot or “correct” every postural difference. Their role is generally to make activity more comfortable and manageable by supporting the foot appropriately.

Quick Answer

Orthotic insoles are used to support the feet, redistribute pressure and improve comfort during standing and walking. They may be recommended for plantar fasciitis, symptomatic flat feet, overpronation, recurring foot discomfort, pressure-related problems and other biomechanical concerns.

How Do Orthotic Insoles Work?

Orthotic insoles sit between the foot and the inside of the shoe.

Their precise effect depends on their shape, firmness and the materials used. An orthotic may be designed to:

Support the arch
Stabilise the heel
Redistribute pressure
Reduce stress through painful areas
Influence excessive foot movement
Improve comfort during standing and walking
Provide greater stability inside footwear

Some orthotics are relatively soft and flexible, while others provide firmer control. The correct level of support depends on the person, their symptoms and the reason the insole is being used.

NHS orthotic guidance describes functional foot orthoses as devices that influence foot function and aim to reduce stress through painful areas, rather than permanently correcting the foot.

What Conditions May Orthotic Insoles Be Used For?

Orthotic insoles may be considered for a range of foot and lower-limb concerns.

Plantar Fasciitis

An orthotic insole may support the arch and help manage loading through the plantar fascia during standing and walking.

For some people, structured support is more appropriate than cushioning alone, particularly where foot posture or excessive movement is contributing to recurring symptoms.

Symptomatic Flat Feet

Flat feet do not necessarily require treatment when they are comfortable and functioning normally.

However, where flat feet are associated with pain, stiffness, weakness or difficulty walking, a specialist may recommend supportive footwear, exercises or orthotic insoles as part of treatment.

Overpronation

Pronation is a normal movement that occurs as the foot adapts to the ground. It becomes more relevant when excessive or poorly controlled movement contributes to discomfort.

A structured orthotic may help support the arch and influence how pressure moves through the foot.

Heel Pain

Depending on its cause, heel pain may benefit from cushioning, pressure relief, arch support or a combination of these features.

Orthotic insoles are sometimes used alongside supportive footwear, stretching and activity modification.

Forefoot Pressure And Metatarsalgia

Some orthotics include a metatarsal raise or targeted cushioning intended to redistribute pressure away from sensitive areas beneath the forefoot.

Tired Or Aching Feet

People who stand or walk for prolonged periods may benefit from a supportive insole where fatigue is associated with insufficient support or repeated loading.

Pressure And Callus Management

An orthotic may be designed to redistribute weight away from areas exposed to excessive pressure. NHS guidance also identifies unwanted pressure and callus development among the reasons insoles may be prescribed.

Are Orthotic Insoles The Same As Cushioning Insoles?

No. Although both are placed inside footwear, their primary purposes are different.

Cushioning Insoles

Cushioning insoles primarily provide:

Shock absorption
Softness beneath the foot
Heel and forefoot cushioning
Pressure relief
Improved everyday comfort

They may be suitable for people whose main concern is impact, hard flooring or foot fatigue.

Orthotic Insoles

Orthotic insoles primarily provide:

Structured arch support
Heel stability
Pressure redistribution
Management of excessive movement
More targeted biomechanical support

Some orthotic insoles also contain cushioning, so the categories can overlap. The correct choice depends on whether the main requirement is softness, structured support or a combination of both.

Read the full comparison:
Cushioning Insoles vs Orthotic Insoles

Do Orthotic Insoles Correct Your Feet?

Orthotic insoles should not normally be described as permanently correcting the shape of an adult foot.

Their purpose is more accurately described as supporting the foot, influencing its function and reducing stress through painful or overloaded areas.

For example, an orthotic may make walking more comfortable by supporting a low arch or stabilising the heel, but this does not necessarily mean that the underlying foot shape has been permanently changed.

This is why the success of an orthotic should usually be judged by improvements in comfort, mobility and activity rather than changes in appearance alone.

Off-The-Shelf vs Custom Orthotic Insoles

Orthotic insoles are available in two broad forms.

Off-The-Shelf Orthotics

Prefabricated orthotics are produced in standard sizes, shapes and support levels.

They may be suitable for:

Uncomplicated plantar fasciitis
Mild or moderate overpronation
Low arches
General arch support
Everyday biomechanical support
People trying structured insoles for the first time

Some prefabricated orthotics can also be trimmed, adjusted, heat-moulded or modified by a professional.

Custom Orthotics

Custom orthotics are created following an individual assessment and may use scans, impressions, pressure information or clinical measurements.

They may be considered where:

Symptoms are persistent or complex
The two feet require different support
Foot shape is difficult to accommodate
A specific prescription is required
Greater control or pressure relief is needed
Standard insoles have not been suitable

Custom orthotics are not automatically necessary for everyone. NHS orthotic services may provide either modular or more customised devices depending on the person’s clinical presentation.

Planned guide:
Off-The-Shelf vs Custom Orthotics

Who May Benefit From Orthotic Insoles?

An orthotic insole may be worth considering if you:

Experience recurring plantar fasciitis
Have painful low arches or flat feet
Notice excessive inward foot movement
Require more support than a flat cushioning insole provides
Experience recurring heel or arch discomfort
Develop pressure beneath the heel or forefoot
Feel unstable inside your footwear
Have been advised to use orthotics by a clinician

Orthotics should be selected according to the cause of the problem rather than pain location alone. Two people with heel pain, for example, may require different types of support.

Why Choose The Bio Advanced Full Length Insole?

The Bio Advanced Full Length Insole is a flexible EVA foot orthotic designed to provide structured biomechanical support while maintaining everyday comfort.

Key features include:

Flexible EVA construction
Choice of support densities
Intrinsic 4° rearfoot support
Metatarsal raise
Sustentaculum tali support
Antimicrobial microfibre top cover
Full-length foot coverage
Heat-mouldable, grindable and trimmable construction
Additional components for further customisation

The Bio Advanced is available in multiple densities and is designed to provide tailored support for concerns such as plantar fasciitis, overpronation, low arches and tired feet.

How Should Orthotic Insoles Fit?

An orthotic should sit securely and flat inside the shoe without creating excessive pressure.

Suitable footwear should provide:

Enough depth for the foot and insole
A secure fastening
Adequate toe room
A stable heel counter
A removable existing liner where possible
Sufficient width around the forefoot

Your heel should remain securely inside the shoe, and the orthotic should not force your toes against the upper.

Footwear that is too shallow or narrow can reduce comfort and prevent the orthotic from functioning as intended. NHS footwear guidance highlights the importance of adequate shoe depth and sufficient room to accommodate insoles.

How Long Does It Take To Get Used To Orthotic Insoles?

Structured orthotics may feel unfamiliar initially because they change how pressure is distributed beneath the foot.

It is generally sensible to introduce them gradually:

Begin with a short period of wear
Check your feet and skin after use
Increase wear time as comfort allows
Use them initially during ordinary daily activities
Avoid immediately using them for an unusually long walk or demanding shift

A gradual adaptation period allows your feet and footwear to adjust. Stop using the insoles and seek advice if they cause severe pain, persistent rubbing, skin damage or a significant worsening of symptoms.

Planned guide:
How Long Do Orthotic Insoles Take To Work?

Continue Reading

Best Insoles For Plantar Fasciitis

Do Arch Support Insoles Help Plantar Fasciitis?

Can Orthotic Insoles Help Overpronation?

Off-The-Shelf vs Custom Orthotics

How Long Do Orthotic Insoles Take To Work?

Cushioning Insoles vs Orthotic Insoles

Our Recommended Support

Bio Advanced Full Length Insole

The Bio Advanced Full Length Insole is a clinically engineered flexible EVA orthotic designed to provide structured arch and rearfoot support. Its choice of densities, full-length profile and customisable construction make it a versatile option for people managing plantar fasciitis, overpronation, low arches and related biomechanical foot concerns.

Product:
Bio Advanced Full Length Insole

When Should You Seek Professional Advice?

Seek advice from a GP, podiatrist, physiotherapist or orthotist if your pain is severe, repeatedly returns, affects normal activities or continues despite appropriate footwear and self-management.

Professional assessment is also advisable if:

Your foot has suddenly changed shape
Pain affects only one foot without an obvious cause
You experience numbness, weakness or poor balance
There is significant swelling or redness
You develop repeated callus or skin damage
You have diabetes or reduced sensation
The orthotic noticeably worsens your symptoms

Flat feet accompanied by pain, weakness, numbness, walking difficulty or repeated ankle injuries should also be assessed rather than managed through insoles alone.