Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
Quick answer: Tarsal Coalition Adults is a common foot/ankle topic that affects many patients. The 2026 evidence-based approach combines proper diagnosis, conservative-first treatment, and escalation only when needed. We treat this regularly at our Howell and Bloomfield Hills practices. Call (810) 206-1402.
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
The most important clinical decision with Tarsal Coalition Adults isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
The most important clinical decision with Tarsal Coalition Adults isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
What Is Tarsal Coalition?
Tarsal coalition is an abnormal fusion or bridging between two or more of the tarsal bones in the midfoot or hindfoot. Instead of having independent bones connected by normal cartilage and ligaments, a coalition creates a rigid or semi-rigid connection that significantly limits foot motion. The most common coalitions occur between the calcaneus and navicular (calcaneonavicular coalition) and between the talus and calcaneus (talocalcaneal coalition).
Tarsal coalition is a congenital condition — it develops in utero — but it doesn’t always cause symptoms in childhood. Many people live their entire childhood unaware of a coalition. Symptoms typically emerge in adolescence when the cartilaginous coalition begins to ossify (convert to bone), or in adulthood when years of compensatory motion elsewhere in the foot creates secondary arthritis and pain.
In adults, tarsal coalition most commonly presents as: a rigid or semi-rigid flatfoot deformity, chronic hindfoot or midfoot pain that doesn’t respond to typical plantar fasciitis or flat foot treatment, frequent ankle sprains (due to restricted subtalar motion and resulting peroneal spasm), and difficulty on uneven terrain.
Diagnosis: How Tarsal Coalition Is Identified
Standard foot X-rays can suggest coalition — particularly the classic ‘anteater nose’ sign of a calcaneonavicular coalition on the oblique view — but CT scan is the gold standard. CT provides a 3D view of the coalition’s extent, type (fibrous, cartilaginous, or bony), and any secondary arthritic changes.
MRI is preferred when the coalition is suspected to be fibrous or cartilaginous (which don’t show on X-ray or CT as clearly) or when the clinician needs to assess for surrounding bone marrow edema and soft tissue involvement.
Clinical exam reveals characteristic findings: decreased or absent subtalar inversion/eversion, peroneal muscle spasm (reactive to restricted motion), and a rigid flatfoot that doesn’t correct on tiptoe standing. If your flatfoot remains flat even when you rise on your toes, coalition or PTTD should be high on the differential.
Treatment Options for Adult Tarsal Coalition
Conservative treatment is always the first approach. Custom orthotics that accommodate (rather than correct) the rigid foot, activity modification, anti-inflammatory treatment, and sometimes steroid injection into adjacent painful joints can control symptoms in many adults — particularly those with fibrous (not bony) coalitions and minimal arthritis.
Surgical options depend on the type of coalition and presence of arthritis. For calcaneonavicular coalition without arthritis, resection with fat graft interposition (removing the bridge and filling the gap with fat tissue) has good results in carefully selected patients. For talocalcaneal coalition or cases with significant secondary arthritis, subtalar or triple arthrodesis (fusion) provides reliable pain relief at the cost of further reducing motion.
Adults diagnosed with tarsal coalition who are symptomatic deserve a thorough evaluation including advanced imaging and a thoughtful surgical consultation. Many patients have been told for years their problem is ‘just flat feet’ before the coalition is identified. If you have a rigid flatfoot with unexplained lateral ankle pain, ask about coalition.
Dr. Tom's Product Recommendations
PowerStep Pinnacle Insoles
⭐ Highly Rated
Accommodative arch support for tarsal coalition patients managing symptoms conservatively. PowerStep helps reduce strain on adjacent joints around the coalition.
Dr. Tom says: “For tarsal coalition patients not yet requiring surgery, PowerStep accommodative orthotics provide meaningful pain reduction by offloading compensatory areas.”
Mild-moderate tarsal coalition, adult flat foot management, daily pain control
Rigid bony coalition with significant arthritis — custom orthotics or surgery needed
Disclosure: We earn a commission at no extra cost to you.
Doctor Hoy’s Natural Pain Relief Gel
⭐ Highly Rated
Topical pain management for coalition-related hindfoot and midfoot pain. Effective for managing daily soreness without systemic medication.
Dr. Tom says: “Doctor Hoy’s provides localized anti-inflammatory and analgesic benefit for the chronic pain that accompanies tarsal coalition.”
Midfoot/hindfoot pain, coalition-related arthritis, daily soreness
Open skin or post-surgical incisions
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- Many adults manage symptoms successfully with conservative care
- Modern surgical techniques provide good outcomes
- Coalition resection in appropriate cases preserves some motion
- Correct diagnosis ends years of frustrating ineffective treatment
❌ Cons / Risks
- Often misdiagnosed as plantar fasciitis or standard flat feet
- CT/MRI imaging needed for definitive diagnosis adds cost
- Surgery involves significant recovery (6–12 weeks non-weight-bearing for fusion)
- Secondary arthritis may limit surgical options in older or delayed-diagnosis patients
Dr. Tom Biernacki’s Recommendation
Tarsal coalition is one of the most underdiagnosed causes of adult foot pain. I see multiple patients per year who’ve been treated for plantar fasciitis for years, only to discover a calcaneonavicular coalition on CT scan. If you have a rigid flat foot, chronic lateral ankle pain, and poor response to standard flat foot treatment, please ask your podiatrist specifically about coalition.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
Can adults live with tarsal coalition without surgery?
Yes — many adults manage symptoms well with custom orthotics and activity modification. Surgery is reserved for patients with significant pain, rigid deformity, or arthritis unresponsive to conservative care.
Is tarsal coalition genetic?
Yes — tarsal coalition is inherited in an autosomal dominant pattern. If you have coalition, your children have approximately a 50% chance of having it too (though many will be asymptomatic).
Can tarsal coalition be seen on regular X-ray?
Sometimes. Calcaneonavicular coalition shows classic signs on oblique foot X-ray. But CT scan is needed for definitive diagnosis and surgical planning.
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📞 (810) 206-1402 Book Online →When Shoes Aren’t Enough — Dr. Tom’s Top 9 Orthotics
About 30% of patients I see for foot pain need MORE than a great shoe — they need a structured insole. Below: my complete 2026 orthotic ranking with pros, cons, and the specific patient I’d give each one to.
★ DR. TOM’S COMPLETE 2026 ORTHOTIC RANKING
9 Best Prefab Orthotics by Use Case
PowerStep, CURREX, Spenco, Vionic, and Tread Labs — every orthotic I’ve fitted to thousands of patients across both Michigan offices. Each card includes pros, cons, and the specific patient I’d give it to. Real Amazon ratings, review counts, and prices below.
Best All-Purpose Orthotic for Most Patients
Semi-rigid arch shell + dual-layer cushion + deep heel cup. The orthotic I’ve fitted to more patients than any other for 15 years. APMA-accepted. Trim-to-fit design works in athletic shoes, casual shoes, and most work boots.
✓ Pros
- Semi-rigid arch shell provides true biomechanical correction
- Deep heel cup centers the heel and reduces lateral instability
- Dual-layer cushion (top + bottom) lasts 9-12 months daily wear
- Available in 8 sizes for precise fit
- APMA-accepted and clinically validated
- APMA-accepted with superior cushioning versus rigid alternatives
✗ Cons
- Too thick for most dress shoes (use ProTech Slim instead)
- Some break-in period required (3-7 days for arch tolerance)
- Not enough correction for severe pes planus or rigid pes cavus
Dr. Tom’s Recommendation: If a patient has run-of-the-mill plantar fasciitis, mild flat feet, or arch fatigue, this is the first orthotic I try. Better value than most premium alternatives for 90% of patients, which is why it’s the first orthotic I reach for in the clinic. Sub-$50 typically.
Maximum Motion Control · Flat Feet & Severe Over-Pronation
PowerStep’s most aggressive stability orthotic. Adds a 2°-7° medial heel post on top of the standard PowerStep platform — designed specifically for flat-footed patients and severe pronators who need real corrective force.
✓ Pros
- 2°-7° medial heel post adds aggressive pronation control
- Same trusted PowerStep arch shell, more correction
- Built specifically for flat-foot biomechanics
- Excellent for posterior tibial tendon dysfunction (PTTD)
- Removable top cover for cleaning
✗ Cons
- Too aggressive for neutral-arch patients
- Needs longer break-in (10-14 days) due to stronger correction
- Adds 2-3 mm of stack height — won’t fit slim dress shoes
Dr. Tom’s Recommendation: When a patient comes in with significant flat feet AND symptoms (heel pain, arch pain, knee pain), the Original PowerStep isn’t aggressive enough. The Maxx is what gets prescribed. About 25% of my flat-footed patients end up here.
Low-Profile · Fits Dress Shoes & Narrow Casuals
3 mm slim profile with podiatrist-designed tri-planar arch technology. Engineered specifically to fit inside dress shoes, oxfords, loafers, and women’s flats without crowding the toe box. Vionic was founded by an Australian podiatrist.
✓ Pros
- 3 mm slim profile (vs 7-10 mm for standard orthotics)
- Tri-planar arch technology adds support without bulk
- Built-in deep heel cup despite slim design
- Fits dress shoes WITHOUT having to remove the factory insole
- Trim-to-fit · APMA-accepted
✗ Cons
- Less arch support than full-volume orthotics
- Top cover wears faster than thicker alternatives
- Not enough correction for severe foot deformities
Dr. Tom’s Recommendation: My default when a patient says ‘I need orthotics but I have to wear dress shoes for work.’ Slim enough to fit in oxfords and pumps without the heel sliding out. The single highest-impact change you can make for office workers with foot pain.
Built-In Metatarsal Pad · Morton’s Neuroma · Ball-of-Foot Pain
Standard Pinnacle orthotic with a built-in metatarsal pad positioned proximal to the metatarsal heads — the exact location that offloads neuromas and metatarsalgia. No need for separate met pads or pad placement guesswork.
✓ Pros
- Built-in met pad eliminates DIY pad placement errors
- Specifically designed for Morton’s neuroma + metatarsalgia
- Same trusted PowerStep arch + heel cup platform
- Top cover protects sensitive forefoot skin
- Faster relief than orthotics + add-on met pads
✗ Cons
- Met pad position is fixed (can’t fine-tune individual placement)
- Some patients with very small or very large feet need custom
- Slightly thicker than the standard Pinnacle
Dr. Tom’s Recommendation: If a patient has Morton’s neuroma, sesamoiditis, or generalized ball-of-foot pain (metatarsalgia), this saves a clinic visit and a prescription. The built-in pad placement is anatomically correct for 80% of feet. Way better than DIY met pads.
Adaptive Dynamic Arch · Athletic & Daily Wear
Currex’s flagship adaptive arch technology — the orthotic flexes with your gait instead of fighting it. Different stiffness zones along the length give you targeted support at the heel, midfoot, and forefoot. Available in three arch heights (low/medium/high).
✓ Pros
- Dynamic flex zones adapt to natural gait cycle
- Three arch heights ensure precise fit
- Lighter than rigid orthotics (no ‘heavy foot’ feel)
- Excellent for runners and athletic walkers
- European podiatric design (German engineering)
✗ Cons
- More expensive than PowerStep Original ($55-65 typically)
- Less aggressive correction than Pinnacle Maxx for severe cases
- Three arch heights means you must self-select correctly
Dr. Tom’s Recommendation: I started recommending Currex three years ago for runners who said PowerStep felt ‘too rigid.’ The dynamic flex zones respect natural gait. Best for active patients who walk 8K+ steps daily and don’t need maximum motion control.
Running-Specific · Heel Strike + Forefoot Strike Compatible
Currex’s purpose-built running orthotic. The midfoot flex zone is positioned for runner’s gait mechanics, with a flared heel cushion for heel strikers and a forefoot rocker for midfoot/forefoot strikers. Tested on 1000+ runners during product development.
✓ Pros
- Designed by German biomechanics lab specifically for runners
- Dynamic arch flexes with running gait (not static like PowerStep)
- Three arch heights (low/medium/high)
- Reduces overuse injury risk in mid-distance runners
- Lightweight (no impact on cadence)
✗ Cons
- Premium price ($60-75)
- Not aggressive enough for severe over-pronators (use Pinnacle Maxx)
- Runner-specific design = less ideal for daily walking shoes
Dr. Tom’s Recommendation: If a patient runs 20+ miles per week and has plantar fasciitis or shin splints, this is the orthotic I prescribe. The dynamic flex zones respect running biomechanics in a way that no rigid PowerStep can match. Pricier but worth it for serious runners.
Cavus Foot & High-Arch Patients
Polyurethane base with a deeper heel cup and higher arch profile than PowerStep — built for cavus (high-arched) feet that need maximum cushion and support. The 5-zone cushioning system addresses the unique pressure points of high-arch feet.
✓ Pros
- Deeper heel cup centers the heel for cavus foot stability
- Higher arch profile fills the void under high arches
- 5-zone cushioning addresses cavus foot pressure points
- Polyurethane base lasts 12+ months
- Available in Wide width
✗ Cons
- Too tall/aggressive for normal or low arches
- Won’t fit slim dress shoes
- Pricier than PowerStep Original
- Some patients find the arch height uncomfortable initially
Dr. Tom’s Recommendation: Cavus foot patients are often misdiagnosed and given low-arch orthotics — that makes everything worse. Spenco’s Total Support has the arch profile that high-arch feet actually need. About 15% of my patients have cavus feet; this is what they wear.
Cushion Layer · Standing All Day · Gel Pressure Relief
NOT a true biomechanical orthotic — this is a cushion insole. But for patients who want gel pressure relief instead of arch correction (or to add ON TOP of factory insoles in work boots), this is the best gel option on Amazon.
✓ Pros
- Genuine gel cushioning (not foam pretending to be gel)
- Targeted gel waves under heel and ball of foot
- Trim-to-fit · works in most shoe types
- Sub-$15 price (most affordable option in this list)
- Massaging texture is genuinely soothing
✗ Cons
- ZERO arch support — this is cushion only
- Won’t fix plantar fasciitis or flat-foot issues
- Compresses faster than PowerStep (4-6 months)
- Top cover wears through in high-mileage applications
Dr. Tom’s Recommendation: I recommend these to patients who tell me ‘I just want my feet to stop hurting at the end of my shift’ and who don’t have a biomechanical issue. Construction workers, factory workers, retail. Pure cushion does the job for them.
Tight-Fitting Shoes · Cycling Shoes · Hockey Skates
Tread Labs Pace insole with firm orthotic arch support for flat feet and plantar fasciitis relief. The replaceable top cover design makes it one of the most durable picks in this guide — backed by a million-mile guarantee and recommended for tight-fitting athletic footwear.
✓ Pros
- Firm orthotic arch support shell (podiatrist-grade)
- Slim profile fits tight athletic footwear
- Lasts 12+ months daily wear
- Excellent for cycling shoes specifically
- Built-in odor-control treatment
✗ Cons
- Premium price ($45-55)
- Less cushion than PowerStep equivalents
- Not as aggressive correction as Pinnacle Maxx for flat feet
- The signature ‘heel cup feel’ takes 1-2 weeks to adapt to
Dr. Tom’s Recommendation: If you’re a cyclist with foot numbness, hot spots, or knee pain — this is the orthotic. The stabilizer cap solves cycling-specific biomechanical issues that no other orthotic addresses. Worth the premium for athletes.
None of these solving your foot pain?
Some patients (about 30%) need custom-molded prescription orthotics. We make 3D-scanned custom orthotics in our Howell and Bloomfield Hills offices — specifically built for your foot mechanics.
Schedule a Custom Orthotic Fitting →FSA/HSA eligible · Most insurance accepted · (810) 206-1402
Dr. Tom’s Circulation & Nerve Kit
Medical-grade graduated compression for circulation support. Diabetic-friendly design, no constricting top band.
View on Amazon →
Arnica + menthol topical for nerve and circulation-related pain. No greasy residue, pump bottle.
View on Amazon →
FTC Disclosure: As an Amazon Associate and Foundation Wellness affiliate, we earn from qualifying purchases. Dr. Biernacki only recommends products used in our clinic or personally vetted.
In-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your tarsal coalition, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
OrthoInfo – AAOS: Tarsal Coalition
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Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) 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 made him one of the most-followed foot & ankle educators on YouTube.