Do Orthotic Insoles Really Help? We Examine the Evidence

Orthotic insoles are widely recommended for heel pain, flat feet and forefoot overload. But do they genuinely change outcomes or do they mostly change how symptoms feel? Here is what the research suggests and how to use it in real life.

Definition

Orthotic insoles (also called foot orthoses, orthotic inserts or shoe inserts) are devices placed inside footwear to support the foot, redistribute pressure and influence movement through the ankle, knee and hip.

They are typically either custom-made (designed from an assessment or scan) or prefabricated (over-the-counter devices selected by size and foot profile).

How orthotic insoles work

Insoles do not “fix” the foot in the way a plaster cast holds a fracture. Instead, they tend to work through a few practical mechanisms: they can increase contact area under the foot, reduce peak pressure in painful zones, add contour under the arch, and change timing or magnitude of motion through the rearfoot and midfoot. For many people, the most meaningful change is a reduction in sensitivity during loading, which makes walking and standing more comfortable while tissues settle.

That matters because many foot pain conditions behave like load-related tendon or fascia problems. If symptoms reduce enough for someone to keep moving, sleep better and complete strengthening, outcomes often improve. This is why insoles are often positioned as an enabler rather than a standalone cure, which aligns with UK advice that orthoses may be offered alongside stretching, strengthening and other conservative measures for plantar fasciitis. NICE CKS plantar fasciitis guidance also flags referral options where orthoses can be considered.

Why it matters

The “do they work?” question is important because orthoses can be a significant out-of-pocket cost and many people try them after months of pain. The evidence is mixed by condition, by device type and by the comparison being made (for example orthoses vs sham devices vs usual care). In practice, the strongest case for insoles is often symptom relief and functional improvement for specific problems and specific timeframes rather than permanent correction of anatomy.

Benefits may include lower pain, improved walking tolerance and the ability to return to activity sooner. Risks are usually minor but real: rubbing, blisters, altered shoe fit, temporary calf or arch soreness during adaptation and occasional symptom shift to a different area if footwear and load are not managed. The key clinical context is that foot pain frequently improves with time and progressive loading, so the value of orthoses should be judged by measurable changes in pain and function rather than by how “supportive” they feel in the first minute.

What the evidence says by condition

1) Plantar heel pain (often labelled plantar fasciitis)

High-quality reviews suggest foot orthoses can reduce pain and improve function for plantar heel pain, especially over short to medium follow-up, though effect sizes are not always large and results differ across trials. A British Journal of Sports Medicine systematic review and meta-analysis evaluated randomised studies of orthoses for plantar heel pain and provides a useful overview of outcomes across time points. 

Importantly, not all trials show custom devices outperform shams or usual care. The STAP randomised trial compared custom-made insoles with sham insoles and GP-led usual care and helps explain why some people feel dramatic benefit while others do not. :contentReference[oaicite:2]{index=2}

Practical takeaway: if heel pain is worst on first steps and improves as you move, a contoured insole can be worth trialling alongside calf stretching, progressive strengthening and footwear changes. For a consumer-friendly overview of plantar fasciitis symptoms and management see the NHS plantar fasciitis page.

2) Flat feet (flexible flatfoot or pes planus)

For symptomatic flexible flatfoot, the evidence base is broader but still variable. A systematic review in Journal of Foot and Ankle Research synthesised evidence on foot orthoses for adults with flatfoot and highlights inconsistency across outcomes and study quality.

More recent systematic work has examined biomechanical changes such as joint angles and moments during walking in flexible flat feet, which is useful when your goal is to reduce excessive pronation-related loading rather than simply to “raise the arch”. 

Practical takeaway: insoles can help when flat feet are painful or when they contribute to tendon overload such as tibialis posterior irritation. If there is marked deformity, progressive collapse or increasing midfoot pain, assessment matters because some cases need bracing or specialist care.

3) Injury reduction in active populations

In sport and military settings, orthoses are often used with the aim of preventing overuse injury. A randomised controlled trial in initial military training reported reduced injury incidence with orthoses, suggesting a possible preventive role in high-load environments. 

At the evidence synthesis level, a BJSM systematic review and meta-analysis assessed foot orthoses and shock-absorbing insoles for prevention of musculoskeletal injury and concluded that benefits are present in some contexts but are not uniform across all groups or injury types. 

Practical takeaway: orthoses may be most useful where training loads increase rapidly, footwear is standardised and individuals have known risk factors. For runners, consider orthoses as one tool alongside strength training and a sensible ramp-up plan rather than as a substitute for load management.

4) Metatarsalgia (ball-of-foot pain)

Metatarsalgia is often a pressure and load problem under the metatarsal heads. Orthoses and metatarsal pads aim to shift load proximally and spread pressure, reducing the “pebble under the forefoot” sensation. A systematic review and meta-analysis has explored customised orthotic interventions for mechanical metatarsalgia focusing on plantar pressure reduction beneath the central metatarsals. 

Evidence continues to develop, including randomised trials investigating prefabricated orthotics with metatarsal pads in older adults. 

Practical takeaway: forefoot pain is often highly responsive to small modifications such as a correctly positioned metatarsal pad, offloading cut-outs and footwear with adequate toe box depth. Poor placement can worsen symptoms, so fit and follow-up matter.

Custom vs over-the-counter (OTC): what to choose

A helpful mindset is “start simple and escalate thoughtfully”. Many people do well with a good-quality prefabricated device selected for foot type and footwear. Custom orthoses can be valuable when symptoms are persistent, complex or linked to significant biomechanical issues.

Feature Over-the-counter insoles Custom-made orthoses
Best for Common heel pain, mild to moderate arch discomfort, early trials and budget-conscious care Persistent symptoms, complex foot shape, significant asymmetry, multiple pain sites or failed OTC trials
Advantages Accessible, quick to try, easier to swap between shoes Specific posting, accommodations and pressure relief tailored to diagnosis and footwear
Limitations May not match foot volume or footwear, limited modification Higher cost, relies on quality assessment and follow-up adjustments
What success looks like Measurable pain reduction and better walking tolerance within weeks Clear functional gains plus reduced flare-ups across varied footwear and activity

If you are selecting products for specific conditions, condition-based collections can help narrow options, for example orthotic insoles overview and plantar fasciitis insoles plus targeted forefoot options such as metatarsal pads and forefoot cushions. 

What users say (and how to interpret it)

In clinic, people often describe orthoses in one of three ways:

  • Immediate comfort: “It feels like the pain switches off when I stand.” This can be a strong sign that pressure redistribution is addressing a driver of symptoms, particularly for plantar heel pain and metatarsalgia.
  • Gradual improvement: “Week two was better, week four I could walk further.” This pattern fits adaptation and improved load tolerance.
  • Not for me: “It made my arch ache or my shoes feel tight.” This is common when volume, stiffness or posting is mismatched or when wear-in is too fast.

Patient experience matters, but it should be paired with simple outcomes: first-step pain score, walking time before symptoms and next-day soreness. Also remember that context influences perception. A high-quality sham-controlled trial is useful precisely because it separates device effect from expectation in a way personal anecdotes cannot.

Step-by-step guide: how to trial orthotic insoles safely

  1. Get clear on the problem. Is it heel pain on first steps, midfoot ache after standing, or forefoot burning under the metatarsal heads? If you are unsure, start with a clinician assessment.
  2. Choose footwear first. Many insoles fail because shoes are too shallow or too flexible. Bring your most-worn pair into the decision.
  3. Select the right insole type. For plantar heel pain, consider arch contour plus heel cushioning. For metatarsalgia, look for forefoot offloading and metatarsal support.
  4. Use a wear-in schedule. Day 1-2: 1-2 hours. Day 3-4: 3-4 hours. Build to full day over 1-2 weeks. If pain spikes, step back.
  5. Track 3 measures. First-step pain (0-10), comfortable walking time and next-day soreness. If two of three improve over 2-6 weeks, continue.
  6. Add the basics. Calf stretching, foot intrinsic strengthening and load management. Orthoses often perform best as part of a package, which aligns with UK conservative care pathways. 
  7. Reassess and adjust. If there is no meaningful change after a structured trial, consider a different device, add-on modifications or a custom assessment.

When to seek urgent review

  • New numbness, pins and needles or weakness
  • Rapid swelling, redness or heat
  • Night pain, fever or unexplained weight loss
  • Severe pain after a pop or acute injury

Bottom line

Orthotic insoles can help, particularly for plantar heel pain, symptomatic flexible flatfoot and forefoot overload, but they are not magic and they are not equally effective for everyone. The strongest real-world approach is to trial an appropriate device with good footwear and a short plan for wear-in, exercise and review. If you are investing in custom orthoses, make sure you also invest in the assessment and follow-up that turns a device into a personalised intervention.

FAQ

Do orthotic insoles work for plantar fasciitis?

Systematic reviews show orthoses can improve pain and function in plantar heel pain, though results vary by study and comparator. They tend to work best alongside stretching and progressive loading.

Are custom orthotics always better than prefabricated insoles?

Not always. Trials comparing custom devices to shams or usual care show mixed results. Many people improve with well-selected prefabricated orthoses, while custom devices can be useful for complex cases or when OTC trials fail. 

Can insoles prevent injuries in runners or military recruits?

Evidence suggests possible reductions in some overuse injuries in certain populations, particularly in structured training environments. Results are not universal, so consider orthoses as one part of injury risk management. 

Do I need a metatarsal pad for metatarsalgia?

Many people benefit from metatarsal support or pads because they can reduce peak pressure under painful metatarsal heads. Placement matters, so professional fitting can help. 

How long should I try an insole before changing approach?

Give it 2 to 6 weeks with a gradual wear-in schedule and track simple outcomes. If pain worsens or there is no meaningful improvement, reassess footwear, diagnosis and device choice.

Are there downsides to orthotic insoles?

The common downsides are rubbing, blisters, reduced shoe space and temporary muscle soreness as you adapt. If symptoms feel sharply worse or neurological symptoms appear, seek clinical review.

 

 


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References and research sources

Article Revised 9th Feb 2026

 

Author

Marc Cameron, Industry Expert and Product Specialist at Algeos. 

Related reading: Orthotic insoles, Plantar fasciitis resources and metatarsal pads.