Custom orthotics vs chemist insoles for flat feet


Do you need custom orthotics for flat feet?

Custom orthotics are not required for everyone with flat feet. A suitable chemist insole can be a reasonable option for some people. Others need an individual prescription or a different treatment approach.

When comparing custom orthotics vs chemist insoles for flat feet, consider your symptoms, foot shape, footwear and daily activities. The most expensive option is not automatically the most suitable.

If flat feet are causing pain or making walking uncomfortable, an assessment can help you decide whether custom foot orthotics, a ready-made insole or another approach is appropriate.



What flat feet need from an insole

Many people have low arches without pain. In that situation, the appearance of the arch alone does not mean an insole is necessary.

However, if you have symptoms, an insole should suit both your foot and your shoe. Useful features to consider include:

  • Comfortable support that follows the shape of your arch
  • A heel area that fits securely without rubbing
  • Enough room in the shoe for your toes and the insole
  • Materials and cushioning suited to your activity

There is no single heel-cup depth or firmness that suits everyone. A very firm or high arch support can be uncomfortable if it does not match your foot.

Side view of a low foot arch with the arch-pain area highlighted
A low arch does not automatically need treatment. Pain and changes in foot function matter too.

Custom orthotics vs chemist insoles: what is the difference?

Both options sit inside your shoes. The main differences are how they are selected, how closely they match your needs and what assessment or follow-up is provided.

A practical comparison of the two options
Feature Chemist or retail insoles Custom orthotics
How it is made A ready-made shape supplied in standard sizes. An individual prescription based on an assessment and the shape of your feet.
Fit and support Depends on the design, your foot shape and the shoes you wear. Materials, shape and modifications can be selected for your needs.
When it may suit Some people with mild symptoms and a comfortable fit. When individual fit, pressure relief or more specific support is needed.
Cost Generally a lower initial purchase cost. Usually a higher initial cost; ask what assessment, fitting and reviews include.
Review and adjustment Support varies between products and providers. Your podiatrist can review the fit and adjust the device where appropriate.

What does the research say?

Research into orthotics for flat feet is mixed. A 2021 systematic review found limited evidence in adults. A 2023 review suggested that orthotics might reduce pain in adults, but differences between studies limited firm conclusions.

These findings do not establish that custom orthotics and chemist insoles are equivalent for every patient. Your symptoms, the diagnosis and the fit of the device still matter.

When can a chemist insole be a reasonable option?

A ready-made insole may suit some people with mild symptoms and a flexible foot. Its usefulness depends on the product, the fit and how your symptoms respond.

Before buying, check that:

  • The support feels comfortable rather than forcing the arch upward
  • The insole sits securely and leaves enough space in your shoe
  • Your heel does not slip and your toes are not squeezed
  • The product is suitable for the footwear and activities you use it for

A footwear assessment can help if you are unsure whether the problem is the insole, the shoe or a combination of both.

If an insole creates new pain, rubbing or pressure, seek advice. Avoid repeatedly buying different products without understanding why your symptoms continue.

What are you paying for with custom orthotics?

Custom orthotics involve more than choosing an insert from a shelf. The assessment helps determine whether you need them and what the prescription should aim to achieve.

At Podiatry Care Gawler, custom orthotics are prescribed following a clinical and biomechanical assessment. Where appropriate, a 3D foot scan contributes to the individual prescription.

Your assessment may consider:

  • The location of your pain and when it occurs
  • Foot and ankle movement, strength and flexibility
  • Your walking pattern and foot posture
  • Work, exercise and daily activity demands
  • Your usual shoes and any insoles you already wear

If custom orthotics are recommended, the prescription can account for your foot shape, footwear and treatment goals. Fitting and review help identify any pressure or comfort issues.

Blue orthotic insoles being discussed alongside a foot-pressure assessment
An orthotic prescription considers your symptoms, foot shape, footwear and activity.

Unsure which option to choose? Bring your regular shoes and any current insoles to your appointment so your podiatrist can assess them.



How do cost and lifespan compare?

Compare the full cost

Chemist insoles generally cost less upfront. Custom orthotics usually cost more because they involve an individual prescription and fabrication. However, fees and inclusions vary between providers.

Before ordering, ask whether the quote includes the assessment, foot scan or casting, fitting, adjustments and follow-up reviews. This makes it easier to compare the full service.

If you plan to claim through private health insurance, ask your insurer to confirm any cover, limits and requirements before you order.

Lifespan depends on the device and how you use it

Materials, daily wear, footwear and changes in your symptoms all affect when an insole needs review. Some orthotic shells last several years, while their top covers may wear sooner.

A device that still looks intact may no longer fit comfortably or suit your needs. Conversely, a worn cover does not always mean the whole orthotic needs replacing.

Have your insoles reviewed if they are damaged, cause pressure, no longer fit your footwear or stop providing the comfort you previously experienced.

When should you see a podiatrist?

You do not have to work through several pairs of chemist insoles before asking for advice. An assessment is particularly useful if:

  • Pain is persistent, worsening or affecting ordinary walking
  • Your foot feels unusually stiff, weak or numb
  • One foot has recently become flatter or changed shape
  • You have pain or swelling around the inside of the ankle
  • An insole causes rubbing, pressure or new discomfort
  • You have diabetes, reduced sensation or another condition that affects foot care

Symptoms such as arch pain or plantar fasciitis need an assessment of the cause. Foot posture alone does not explain every painful foot.

If your heel hurts with your first steps after rest, our guide to morning heel pain and plantar fasciitis explains common symptoms and when to seek help.

What happens at our Gawler clinic?

Your podiatrist will ask about your symptoms, examine your feet and ankles, and assess how you move. Your shoes and current insoles are also part of the discussion.

A walking or video gait assessment may help clarify the way your foot and lower limb function. The findings guide the treatment plan.

Depending on the assessment, that plan may include footwear advice, exercises, activity changes, a ready-made insole or custom orthotics. The aim is to choose an approach that suits your needs.

Clinician examining a foot above a foot-assessment platform
A foot and ankle assessment helps determine whether an insole is appropriate.

Common questions about insoles and flat feet



Choosing the right option

No. A suitable ready-made insole can be useful for some people. Custom orthotics allow an individual prescription, but suitability depends on the diagnosis, your foot shape, footwear and response to treatment.




Support and symptom management

Insoles can provide support and may help manage symptoms while you wear them. They do not usually permanently change the shape of the foot. Many people with painless flat feet do not need treatment.




Comfort and pressure checks

New insoles may need gradual introduction. However, persistent pain, rubbing, blisters or pressure need review. Stop using an insole that is causing those problems and ask for advice, especially if you have reduced sensation.




Matching the insole to your footwear

Not always. Shoes differ in depth, width and shape, so an orthotic that fits one pair may not fit another. Bring your usual shoes to your appointment and discuss footwear fit before ordering.



Book a foot and orthotics assessment in Gawler

Get advice before choosing your next insole. An assessment can help identify the cause of your pain and whether an insole is likely to be useful.

Podiatry Care Gawler welcomes patients from Gawler, Evanston, Willaston, Hewett and surrounding northern Adelaide communities. Bring your regular shoes and any existing orthotics or insoles to your appointment.



This article provides general information and does not replace an individual medical or podiatry assessment.


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