The question I hear most often in consults for heel pain, plantar fasciitis, and flat feet: “Can I just use an over-the-counter insole, or do I really need custom orthotics?” It is a legitimate question — good OTC insoles cost $25–$60, while custom orthotics cost $300–$600 out-of-pocket (or are covered by most PPO plans and Medicare when medically indicated). The honest answer requires understanding what OTC insoles can and cannot do, and what specifically makes a custom orthotic different. Dr. Tom Biernacki, DPM at Balance Foot & Ankle in Howell and Bloomfield Hills, Michigan prescribes both — and the decision is based on clinical evidence, not on what generates more revenue.

What OTC Insoles Can Do Well

High-quality OTC arch supports — PowerStep Pinnacle, PowerStep Pinnacle Total Support — provide a meaningful level of arch contact and torsional rigidity that improves on the flat insole in most shoes. For patients with mild plantar fasciitis and no significant structural foot problem (normal arch height, no significant pronation, no leg length discrepancy), a quality OTC insole may provide adequate support. For patients who simply need better shock absorption under the metatarsal heads (metatarsalgia), a metatarsal pad placed just proximal to the heads is as effective as anything available by prescription. For patients who are testing whether arch support helps their symptoms before committing to custom orthotics, a 6-week trial of a quality OTC insert is reasonable.

What OTC Insoles Cannot Do

OTC insoles are manufactured in generic arch height categories (low, medium, high) and generic foot width categories. They cannot be calibrated to an individual’s specific biomechanical fault. The specific problems that require custom orthotic calibration: significant overpronation or supination that exceeds what a generic insole can address; leg length discrepancy (requires a heel lift of specific millimeter height in one shoe only); metatarsal head pressure inequality (specific metatarsal heads bear excessive load in patterns that a generic metatarsal pad cannot address); post-surgical orthotic requirements (after reconstructive foot surgery, specific forces must be redirected that only a custom device can manage); and custom accommodative orthotics for diabetic feet where specific pressure points must be offloaded to prevent ulceration — this requires pressure plate data and custom molding.

What Makes a Custom Orthotic Custom

At Balance Foot & Ankle, custom orthotics begin with pressure plate gait analysis — the patient walks across a pressure measurement plate that creates a force map of every step, identifying pressure hotspots, asymmetries between feet, and timing abnormalities in the gait cycle. This data guides the prescription. The foot is then captured in a 3D foam casting or digital scan in the corrected position — not simply sitting still, but with the subtalar joint held in neutral and the forefoot properly positioned relative to the rearfoot. The prescription specifies the exact intrinsic and extrinsic corrections, materials, top cover, and accommodations needed for the individual patient.

The resulting orthotic controls foot position in a way that is biomechanically specific to the individual. A patient with rearfoot valgus, forefoot varus, and a Morton’s extension requires a device with different corrections in all three planes than a patient with hypermobile flat foot and metatarsalgia — yet both might fit the same “high arch OTC insole” size.

When to Start with OTC and When to Go Directly to Custom

Start with a quality OTC insole first if: this is the first episode of plantar fasciitis (less than 8 weeks), you have a structurally normal foot, the pain is mild to moderate, and you are willing to commit to a 6-week trial before evaluating results. Go directly to custom orthotics if: you have had plantar fasciitis or arch pain for more than 12 weeks without significant improvement; you have a significant structural deformity (bunion, flat foot, high arch, leg length discrepancy); your foot condition is post-surgical; you are diabetic with neuropathy requiring specific pressure offloading; you have had prior OTC insole trials that helped only partially; or your insurance covers custom orthotics (most PPO plans and Medicare cover them when medically indicated — it costs you the same or less than buying multiple OTC products).

Insurance Coverage for Custom Orthotics

Most PPO insurance plans, Blue Cross Blue Shield of Michigan, Priority Health, McLaren Health Plan, United Healthcare, and Medicare Part B cover custom foot orthotics when prescribed by a licensed physician for a qualifying medical condition (plantar fasciitis, flat foot, diabetic neuropathy, post-surgical biomechanical need, and others). The documentation requirements include clinical examination findings, diagnosis codes, and in some cases prior authorization. Our office handles all insurance documentation and authorization. The patient’s out-of-pocket cost for covered custom orthotics is often less than the cost of 2–3 pairs of quality OTC insoles over a year. Call (810) 206-1402 to verify your coverage before your appointment.

The Most Common Orthotics Mistake

The most common mistake: continuing to buy new OTC insoles every 3–4 months when the first one didn’t fully resolve the problem. Patients who spend $50 every few months on OTC insoles over 18 months have spent $150–$300 on products that are not providing the biomechanical correction their feet require. A single pair of custom orthotics prescribed correctly and covered by insurance would have cost them less and resolved the problem. If OTC insoles are providing some but not complete relief — or if the relief is short-lived — custom orthotics should be considered.

Book a Custom Orthotic Evaluation — Howell & Bloomfield Hills

Dr. Tom Biernacki, DPM performs pressure plate gait analysis and custom orthotic fabrication at both Balance Foot & Ankle locations. Insurance verification provided before fabrication. Call (810) 206-1402 or book online.

Related: Custom Orthotics Michigan · Best Insoles for Plantar Fasciitis · Best Orthotics for Standing All Day

Dr. Tom Biernacki, DPM

Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.