Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
| Feature | Kohler’s Disease | Iselin Disease | Sever’s Disease | Freiberg’s Infraction |
|---|---|---|---|---|
| Bone Affected | Navicular | 5th metatarsal base apophysis | Calcaneal apophysis | 2nd metatarsal head |
| Age of Onset | 3–7 years; boys > girls | 8–13 years; active children | 8–14 years; active children | 11–17 years; females > males |
| Mechanism | AVN of navicular ossification center; delayed ossification | Traction apophysitis at peroneus brevis insertion | Traction apophysitis at Achilles insertion | AVN of 2nd metatarsal head (often in ballet) |
| X-ray Finding | Sclerosis + flattening of navicular; irregular ossification | Fragmentation of 5th MT base apophysis | Sclerosis + fragmentation calcaneal apophysis | Flattening; sclerosis; fragmentation 2nd MT head |
| Prognosis | Excellent — self-limiting; full reossification by age 7–10 | Excellent — self-limiting | Excellent — resolves with skeletal maturity | Fair — cartilage loss may persist; surgery sometimes needed |
| Treatment | Short-leg walking cast 4–8 weeks; custom arch support; activity modification | Rest; lateral wedge; boot if severe | Heel lifts; stretching; orthotic; boot if severe | Metatarsal pad; orthotic; core decompression; metatarsal head reshaping |
| Stage | X-ray Features | Treatment | Expected Duration |
|---|---|---|---|
| Early (initial sclerosis) | Increased density (sclerosis) of navicular; outline intact | Activity modification; supportive arch orthotic; pain-guided activity | 3–6 months until symptom resolution |
| Fragmentation | Navicular appears flattened and fragmented; irregular ossification | Short-leg walking cast 4–8 weeks; transition to arch support; avoid impact sport | 6–12 months until reossification begins |
| Reossification | Navicular density normalizing; shape reconstituting | Arch support; gradual return to activity | Reossification complete 12–24 months from onset |
| Reconstitution | Normal-appearing navicular (may remain slightly smaller) | No restrictions; normal activity | By age 6–10 in most cases |
Quick answer: Treatment for kohlers disease treatment follows a stepwise approach: 1) conservative care first (rest, ice, supportive footwear, OTC anti-inflammatories), 2) physical therapy and targeted exercises, 3) in-office treatments (injections, custom orthotics) if conservative fails at 4-6 weeks, 4) surgery for refractory cases. Most patients resolve at step 1 or 2. Call (810) 206-1402.
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
The most important clinical decision with Kohlers Disease Treatment 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 Kohlers Disease Treatment isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
What Is Kohler’s Disease?
Kohler’s disease is avascular necrosis (bone death from interrupted blood supply) of the navicular in young children, typically between ages 3-7. The navicular is the last tarsal bone to ossify in the foot — its blood supply is vulnerable during the period of rapid ossification. Compression forces during weight-bearing in this vulnerable period disrupt the blood supply, leading to avascular necrosis.
The condition presents as medial arch pain in a young child with a characteristic antalgic (pain-avoiding) gait — the child walks on the outer edge of the foot to avoid loading the painful navicular. The foot may appear swollen over the navicular. X-ray shows characteristic sclerosis (increased density), flattening, and fragmentation of the navicular — but importantly, despite the alarming appearance, the bone reliably remodels completely.
Self-Limiting Nature
Unlike adult navicular avascular necrosis, Kohler’s disease in children almost universally resolves completely. The navicular revascularizes spontaneously, and the bone remodels to normal shape over 2-4 years. Long-term studies show children treated for Kohler’s disease have normal foot function and radiographic appearance at skeletal maturity. The condition does not predispose to arthritis or deformity in adulthood.
Treatment
The primary goal is pain management during the healing phase. A short leg walking cast for 4-6 weeks provides excellent pain relief by unloading the navicular. Studies comparing cast immobilization to observation alone show significantly faster pain resolution and return to normal activity with casting — though both groups have identical long-term outcomes.
Following cast removal: arch-supportive footwear and possibly insoles for 6-12 months while the navicular continues healing. Activity restriction is based on pain — children should guide their own activity level. Full return to all activities is the expected outcome.
Dr. Tom's Product Recommendations
PowerStep Pinnacle Orthotic
⭐ Highly Rated
Post-cast arch support for Kohler’s disease — reduces navicular loading during the remodeling phase after immobilization. Available in children’s sizes for ages 6+.
Dr. Tom says: “https://m.media-amazon.com/images/I/71k+PB6ZHLL._AC_SL300_.jpg”
Post-cast navicular support, ongoing arch protection during remodeling
Active casting phase — requires cast immobilization first
Disclosure: We earn a commission at no extra cost to you.
Doctor Hoy’s Natural Pain Relief Gel
⭐ Highly Rated
For older children (10+), topical analgesic for residual midfoot soreness during the navicular remodeling phase after cast removal. Natural ingredients appropriate for pediatric use.
Dr. Tom says: “https://m.media-amazon.com/images/I/71Z5e1QKXUL._AC_SL300_.jpg”
Post-cast medial arch soreness in older children
Children under 10 without medical supervision
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- Excellent long-term prognosis — complete bone remodeling expected in all cases
- Short-leg cast dramatically reduces pain and speeds return to normal activity
- No long-term functional limitations or arthritis risk
❌ Cons / Risks
- 4-6 weeks of casting is disruptive for young active children
- X-ray appearance is alarming (fragmented navicular) despite benign prognosis — parents need clear reassurance
- Bone remodeling takes 2-4 years — occasional activity-related discomfort may persist during this period
Dr. Tom Biernacki’s Recommendation
Kohler’s disease is one of those diagnoses where my most important job is reassuring the parents. The X-ray looks terrifying — the navicular is fragmented and flattened. But I can tell them with complete confidence that the bone will remodel completely, their child will have a normal foot, and in 2-3 years you would never know this happened. A 4-6 week walking cast eliminates the pain, then we just let the child’s own biology do the rest.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
Does Kohler’s disease require surgery?
No — Kohler’s disease virtually never requires surgery. The navicular remodels spontaneously in essentially all cases. Short-leg casting manages pain during healing; surgery is not part of the treatment protocol for typical Kohler’s disease.
How long does Kohler’s disease last?
Pain typically resolves within 6-18 months. Full radiographic remodeling of the navicular takes 2-4 years, though children are usually pain-free and fully active long before complete bony remodeling is complete. Long-term prognosis is excellent.
Can Kohler’s disease affect both feet?
Bilateral Kohler’s disease occurs in approximately 25% of cases. Treatment principles are the same — both feet are managed simultaneously if both are symptomatic, though typically one side is more severely affected.
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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 PowerStep Pinnacle — 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
- Lower price than CURREX RunPro for equivalent function
✗ 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 PowerStep Pinnacle for 90% of patients, which is why I swapped it into our clinic kits three years ago. 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
PowerStep Pinnacle’s slim version of their famous Green insole. The trademark stabilizer cap is preserved but the overall thickness is reduced — works in cycling shoes, hockey skates, ski boots, and other tight-fitting footwear that the standard CURREX RunPro can’t fit into.
✓ Pros
- Stabilizer cap centers the heel (PowerStep Pinnacle’s signature feature)
- 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 Recommended Foot Support Products
Medical-grade arch support recommended by Dr. Biernacki as the best OTC orthotic for mild-to-moderate cases. Available in children’s sizes. Sub-$50 alternative to custom orthotics.
Plant-based arnica + menthol topical for acute pain relief. FSA-eligible, no harsh chemicals, safe for sensitive patients.
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 kohlers disease treatment, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
AAOS: Kohler’s Disease — Pediatric Navicular Avascular Necrosis
Ready to Get Relief?
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Or call: (810) 206-1402
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.