What Is An Arch Support Insole?
An arch support insole is a shoe insert with a raised or contoured section beneath the middle of the foot.
Unlike a completely flat cushioning insole, it aims to increase contact beneath the arch and provide a more supportive surface during standing and walking.
Depending on its design, an arch-supporting insole may include:
- A contoured medial arch
- A shaped heel cup
- Rearfoot support
- A metatarsal raise
- Cushioning beneath the heel
- Multiple material densities
- Wedges or posting
- Pressure-relief components
Medial arch supports are commonly used to support the midfoot and relieve stress through overloaded structures.
How May Arch Support Help Plantar Fasciitis?
The plantar fascia runs from the heel towards the toes and contributes to supporting the arch of the foot.
An arch-supporting insole may increase contact beneath the middle of the foot rather than allowing most of the load to remain concentrated beneath the heel and forefoot.
This may help by:
- Supporting the arch
- Redistributing pressure
- Reducing concentrated loading beneath the heel
- Improving rearfoot stability
- Making standing and walking more comfortable
- Reducing fatigue beneath the middle of the foot
- Providing a more supportive base inside the shoe
NHS guidance recommends footwear with good arch support and cushioned heels and includes insoles or heel pads among the self-management options for plantar fasciitis.
Do Arch Supports Cure Plantar Fasciitis?
No. Arch support insoles should not be described as a guaranteed cure.
Plantar fasciitis may be influenced by several factors, including:
- Sudden increases in walking or running
- Prolonged standing
- Hard surfaces
- Calf or ankle tightness
- Footwear with insufficient cushioning or support
- Reduced strength or load tolerance
- Body weight and overall loading
- Recovery between demanding activities
The NHS identifies prolonged standing, increased activity, tightness around the calf or heel, hard exercise surfaces and poorly cushioned or supportive footwear among the factors associated with plantar fasciitis.
Current clinical guidance recommends using foot orthoses as part of a broader treatment programme rather than as an isolated short-term treatment.
Who May Benefit From Arch Support?
An arch-supporting insole may be worth considering if you:
- Experience plantar heel pain alongside arch fatigue
- Have symptomatic low arches
- Feel that the foot lacks support inside footwear
- Stand or walk for prolonged periods
- Experience excessive inward foot movement associated with discomfort
- Find flat cushioning insoles insufficient
- Need greater rearfoot stability
- Experience recurring symptoms in unsupportive shoes
- Have been advised to use one by a healthcare professional
However, the appearance of the arch alone does not determine whether support is required.
People with low arches may have no pain, while people with higher or apparently neutral arches can still develop plantar fasciitis following increased activity, hard-surface loading or unsuitable footwear.
The aim is to improve comfort and function rather than force every foot into the same shape.
Do Flat Feet Always Need Arch Support?
No.
Flat feet are common, and many people with low arches have no pain or functional difficulty.
Arch support may be more relevant when low arches are associated with:
- Heel pain
- Arch discomfort
- Foot fatigue
- Instability
- Recurring symptoms
- Difficulty tolerating prolonged standing
- Reduced walking comfort
The NHS states that flat feet normally require no treatment when they are not causing problems. Insoles may help relieve symptoms but do not permanently change the shape of the feet.
Can People With High Arches Use Arch Support?
Potentially.
A person with a high arch may have less natural contact beneath the middle of the foot, leaving more pressure concentrated beneath the heel and forefoot.
A suitable insole may help by:
- Increasing contact beneath the arch
- Redistributing pressure
- Cushioning the heel
- Cushioning the forefoot
- Improving the fit between the foot and shoe
However, a sharply contoured or overly firm support may feel uncomfortable beneath a rigid high arch.
The arch profile must match the foot rather than simply being as high as possible. Royal Orthopaedic Hospital guidance notes that a podiatrist may recommend an insole to reduce stress where either a high-arched or flat foot contributes to symptoms.
Is More Arch Support Better?
No.
An excessively high or firm arch support may create a concentrated pressure point rather than distributing load comfortably.
Too much arch support may cause:
- Sharp pressure beneath the midfoot
- Burning or aching
- Numbness
- The sensation that the foot is being pushed outwards
- Reduced stability
- Rubbing
- Difficulty adapting to the device
- New discomfort elsewhere
A suitable insole should feel supportive but not intrusive.
The foot should make broad, comfortable contact with the arch contour rather than resting on one hard ridge.
How Should Arch Support Feel?
A new arch-supporting insole may feel noticeable at first.
You may be aware of:
- Increased contact beneath the arch
- A slightly different heel position
- Greater support through the midfoot
- A change in pressure distribution
It should not cause:
- Sharp pain
- Burning
- Numbness or tingling
- Persistent rubbing
- Skin damage
- Severe aching
- Increasing heel pain
- A feeling of instability
NHS orthotic guidance explains that insoles can initially feel unfamiliar because they alter standing and walking. Severe or continuing discomfort is a reason to stop using them and seek review.
Arch Support vs Cushioning
Arch support and cushioning serve different primary purposes.
Arch Support Primarily Provides
- Midfoot contact
- Structured support
- Rearfoot stability
- Pressure redistribution
- Greater resistance to compression
- Management of excessive movement where relevant
Cushioning Primarily Provides
- Shock absorption
- Softness beneath the heel
- Forefoot cushioning
- Pressure relief
- Comfort on hard surfaces
- Reduced general foot fatigue
Some people with plantar fasciitis mainly require heel cushioning.
Others may benefit from broader arch and rearfoot support.
Many orthotic insoles combine both features by using a supportive EVA base with a softer top cover or additional cushioning components.
Arch Support vs Heel Pad
A heel pad mainly cushions the rear of the foot.
An arch support affects a larger area beneath the heel and midfoot.
A Heel Pad May Be More Suitable When
- Pain is highly localised beneath the heel
- Cushioning is the main priority
- Footwear space is limited
- Arch support is not required
- A full-length insole feels too bulky
An Arch-Supporting Insole May Be More Suitable When
- Heel pain occurs alongside arch fatigue
- Greater midfoot contact is required
- Rearfoot stability is a concern
- A flat heel pad provides insufficient support
- Pressure needs to be distributed across a wider surface
The NHS includes both heel pads and insoles among the possible self-management options for plantar fasciitis.
Do Arch Supports Reduce Pronation?
A structured orthotic may reduce or modify some inward foot movement while it is being worn.
Pronation is a normal movement that helps the foot absorb force and adapt to the ground. It does not automatically require treatment.
Support may become useful when excessive or poorly controlled movement is associated with:
- Plantar heel pain
- Arch fatigue
- Instability
- Recurring symptoms
- Reduced tolerance for standing or walking
Arch contours, heel cups and rearfoot posting may all influence how pressure and movement pass through the foot.
The aim is generally improved comfort and function, not the complete elimination of normal pronation.
Does Controlling Pronation Always Fix Plantar Fasciitis?
No.
Plantar fasciitis is not caused by one foot posture or movement pattern in every person.
Someone may develop symptoms because of:
- Increased exercise
- Long periods of standing
- Hard surfaces
- Calf tightness
- Reduced tissue capacity
- Unsuitable footwear
- A combination of factors
An orthotic may be helpful where foot movement contributes to symptoms, but another person may respond better to cushioning, footwear changes, stretching or progressive strengthening.
The device should be selected according to the individual presentation rather than assuming that all plantar heel pain is caused by pronation.
Prefabricated vs Custom Arch Supports
Arch-supporting orthotics are available as off-the-shelf and custom-made devices.
Prefabricated Arch Supports
These are manufactured in standard:
- Sizes
- Shapes
- Densities
- Arch profiles
- Support levels
They may be suitable where:
- Foot shape is reasonably straightforward
- Both feet need similar support
- Symptoms are uncomplicated
- The arch contour feels comfortable
- Extensive modification is unnecessary
Some prefabricated devices can also be professionally heat moulded, ground or adjusted.
Custom Orthotics
These are made following an individual assessment and prescription.
They may be considered where:
- The two feet require different designs
- Foot shape is difficult to accommodate
- A specific area requires precise offloading
- Previous injury or surgery has altered the foot
- Standard devices repeatedly cause discomfort
- A complex clinical prescription is required
Current plantar-heel-pain guidance allows either prefabricated or custom foot orthoses to be used alongside other treatment and does not indicate that every person requires a custom device.
Full-Length vs Three-Quarter-Length Arch Supports
Arch-supporting insoles are available in different lengths.
Full-Length Insoles
These extend from the heel to the toes and may provide:
- Arch and rearfoot support
- Heel cushioning
- Forefoot cushioning
- Pressure distribution across the whole foot
- A continuous surface inside the shoe
They generally require footwear with adequate depth or a removable liner.
Three-Quarter-Length Insoles
These finish behind the ball of the foot and may fit more easily inside:
- Formal footwear
- Shallower shoes
- Shoes without removable liners
- Footwear with limited toe space
They provide arch and rearfoot support but less cushioning beneath the forefoot.
The correct format depends on the footwear and where cushioning is needed.
Is A Firm Arch Support Better Than A Soft One?
Not automatically.
A firmer orthotic may retain its shape and provide more consistent structural support.
A softer device may feel more accommodating and provide greater pressure relief.
A Firmer Support May Be Considered When
- Greater resistance to compression is required
- Rearfoot stability is a priority
- A defined arch profile is needed
- The wearer is highly active
- Professional modification is planned
A Softer Support May Be Considered When
- The feet are sensitive
- Strong arch contact is poorly tolerated
- Cushioning is a priority
- The wearer is adapting to structured support
- There is a need for greater accommodation
Density should be selected according to comfort, activity, foot shape, footwear and support needs rather than one factor alone.
Can Arch Supports Help Morning Heel Pain?
Arch support may make the first steps more comfortable once the insole is inside the footwear.
However, an insole does not affect the foot while the wearer is asleep.
Persistent first-step morning pain may also be managed through:
- Gentle foot movement before standing
- Plantar-fascia stretching
- Calf stretching
- Supportive footwear
- Avoiding barefoot walking on hard floors
- A night splint where appropriate
The clinical guideline recommends night splints for people who consistently experience first-step morning pain, while orthoses are used during weight-bearing activity.
Can Arch Supports Help People Who Stand All Day?
They may help where prolonged standing causes heel pain, arch fatigue or instability.
A structured insole may:
- Support the midfoot
- Redistribute load
- Cushion the heel
- Improve rearfoot stability
- Reduce fatigue associated with unsupported arches
- Improve comfort inside work footwear
Supportive footwear remains essential.
The NHS recommends cushioned heels, good arch support and avoiding long periods of standing where possible during a plantar-fasciitis flare-up.
What Footwear Works Best With Arch Supports?
An orthotic works as part of the shoe.
Suitable footwear should ideally provide:
- Adequate internal depth
- Enough width
- Sufficient toe room
- A secure lace, strap or fastening
- A firm heel counter
- A stable sole
- A removable existing liner
- A heel that remains securely contained
Supportive and well-cushioned footwear can help support the arch, while completely flat shoes, backless footwear and unsupportive sandals may aggravate plantar-fasciitis symptoms.
An orthotic cannot fully compensate for footwear that is too shallow, narrow, badly worn or unstable.
Should You Remove The Existing Shoe Insole?
Where possible, remove the shoe’s original removable liner before fitting a full-length orthotic.
Stacking a full-length arch support on top of another liner may:
- Reduce toe room
- Push the heel upwards
- Create pressure across the top of the foot
- Cause heel slippage
- Change where the arch contour contacts the foot
- Make the shoe unstable
The replacement orthotic should sit flat against the base of the shoe unless its instructions state otherwise.
How Should The Arch Support Line Up With The Foot?
The raised contour should sit beneath the natural arch rather than too far forwards or backwards.
Check that:
- The heel sits fully within the rear section
- The highest point of the support feels correctly positioned
- The arch contact is broad rather than sharply localised
- The insole remains flat
- The toes are not compressed
- The insert cannot slide
- The heel remains secure
- The shoe fastens normally
A support that is the wrong length may place the arch contour beneath the heel or ball of the foot rather than the midfoot.
Choosing the correct size is therefore important even where an insole can be trimmed at the toes.
Should Arch Supports Be Worn In Both Shoes?
Arch support insoles are normally worn as a pair.
This may provide:
- Similar height on both sides
- More balanced support
- Consistent footwear fit
- Reduced risk of creating an unintended leg-length difference
- A more even walking experience
A clinician may still modify each side differently where the feet have different requirements.
Do not add substantial wedges or lifts beneath only one orthotic unless there is a clear reason for doing so.
How Long Does It Take To Adapt?
A structured arch support often feels more noticeable than a flat cushioning insole.
Introduce it gradually:
- Wear it for up to an hour during ordinary activity.
- Check for rubbing, redness or pressure.
- Increase wearing time by approximately 30 to 60 minutes each day.
- Become comfortable walking before wearing it for a full shift.
- Avoid first testing it during a long run or unusually active day.
- Stop if severe pain, numbness or skin damage develops.
Guy’s and St Thomas’ NHS guidance recommends beginning with up to one hour and gradually increasing wear over approximately one to two weeks.
How Long Before Symptoms Improve?
Some people may notice improved comfort relatively quickly, while others require several weeks of consistent use and a broader treatment programme.
The response may depend on:
- How long the symptoms have been present
- Whether the insole fits correctly
- Footwear
- Activity levels
- Consistency of use
- Calf and plantar-fascia flexibility
- Strength and load tolerance
- Whether arch support addresses the actual cause of discomfort
An insole should not be judged entirely from the first few minutes.
However, progressively worsening pain usually means the fit, density, height or device selection needs review.
Should Arch Supports Be Worn All Day?
Once the insole has been introduced successfully and remains comfortable, it may be worn during the activities in which support is required.
This could include:
- Work
- Everyday walking
- Shopping
- Commuting
- Exercise
- Prolonged standing
- Household activity
Consistent use during normally aggravating activities may be more useful than wearing the support intermittently.
It should not be worn for longer simply because it is labelled as supportive. Comfort and skin condition still need monitoring.
Can Arch Supports Make Plantar Fasciitis Worse?
Potentially, if the support is unsuitable.
Problems may occur when the insole is:
- Too high beneath the arch
- Too firm
- Too soft
- The wrong size
- Poorly positioned
- Too thick for the footwear
- Moving inside the shoe
- Combined with unsuitable footwear
- Worn out or permanently compressed
An unsuitable support may cause:
- Increased arch pain
- Worsening heel pain
- Forefoot pressure
- Rubbing
- Toe compression
- Instability
- New discomfort in the legs or back
NHS guidance notes that insoles can occasionally cause aches elsewhere because they alter standing and walking. Severe or persistent discomfort is a reason to stop using them.
What Else Should Be Used Alongside Arch Supports?
A broader plantar-fasciitis programme may include:
- Supportive footwear
- Plantar-fascia stretching
- Calf stretching
- Progressive foot and calf strengthening
- Appropriate activity modification
- Gradual return to walking or running
- Avoiding prolonged barefoot walking on hard surfaces
- Taping
- A night splint for persistent first-step pain
NHS and clinical guidance place insoles alongside stretching, rehabilitation, footwear changes and activity management rather than treating them as a complete standalone solution.
Why Choose The Bio Advanced Full Length Insole?
The Bio Advanced Full Length Insole is a flexible EVA orthotic designed to provide structured support across the heel, arch and forefoot.
Its features include:
- Flexible EVA construction
- Multiple density options
- Full-length coverage
- Intrinsic 4° rearfoot support
- A metatarsal raise
- Sustentaculum tali support
- An antimicrobial microfibre top cover
- Heat-mouldable and grindable construction
- Self-adhesive customisation components
- Multiple sizes
- Supplied as a pair
The included components provide scope for selected heel cushions, forefoot and rearfoot wedges, heel lifts and pressure-relief modifications. The current product information states that the device may contain latex.
Orthotix lists the Bio Advanced for uses including plantar fasciitis, low arches, overpronation, pressure relief and sore or tired feet.
Who May Benefit From Bio Advanced?
The Bio Advanced may be suitable where the wearer requires:
- More support than a flat cushioning insole
- A defined but flexible arch contour
- Rearfoot stability
- Full-length pressure distribution
- A choice of support density
- Scope for professional adjustment
- Heel and forefoot support
- An orthotic suitable for supportive everyday or sports footwear
It may be less suitable where:
- The footwear is too shallow
- Strong arch contact is poorly tolerated
- Only light cushioning is required
- Each foot needs a substantially different prescription
- A deformity requires custom accommodation
- There is a known latex sensitivity
- A healthcare professional recommends another design
When Might A Cushioning Insole Be Better?
A cushioning insole may be more appropriate where the main priorities are:
- Shock absorption
- Heel cushioning
- Forefoot comfort
- Pressure relief
- Comfort on hard floors
- Reduced general foot fatigue
- Minimal arch contouring
The Airyplant® PRO is the cushioning option featured elsewhere within this advice hub.
The choice should reflect whether the main requirement is soft pressure relief or more structured arch and rearfoot support.
When Should You Seek Professional Assessment?
Professional assessment may be helpful where:
- Heel pain is severe or persistent
- Symptoms repeatedly return
- Walking is affected
- One foot behaves differently from the other
- Standard arch supports remain uncomfortable
- Numbness or weakness is present
- Skin damage develops
- Previous injury or surgery has altered the foot
- A significant deformity exists
- A custom prescription may be required
A podiatrist or orthotist can assess the symptoms, arch shape, pressure, movement, footwear and activity before recommending cushioning, prefabricated support, professional modification or a custom-made device.
The Key Takeaway
Arch support insoles may help some people with plantar fasciitis by:
- Supporting the midfoot
- Redistributing pressure
- Improving rearfoot stability
- Reducing arch fatigue
- Cushioning the heel
- Making standing and walking more comfortable
However, more arch height or firmness is not automatically better.
The support should match the foot, fit securely inside appropriate footwear and feel comfortable rather than sharply prominent. Orthotic insoles should normally be combined with supportive footwear, stretching, strengthening and sensible activity management rather than used as the only treatment.
