Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Township, MI
Last reviewed: May 2026
The most important clinical decision with Kohler’s Disease in Adults: Avascular Necrosis of the Navicular isn’t which treatment to choose — it’s identifying which subtype you have first. Our podiatrists see patients treated for the wrong subtype for months before the correct diagnosis leads to full resolution. Call (810) 206-1402 — expert podiatric care across Michigan.
Kohler’s disease (avascular necrosis of the navicular) is classically a pediatric condition, but adult-onset navicular AVN — sometimes called adult Kohler’s disease — presents in middle-aged adults with midfoot pain, collapse, and progressive deformity. Unlike the pediatric form, adult navicular AVN rarely self-resolves and often requires surgical intervention.
Pediatric vs Adult Kohler’s Disease: Key Differences
| Feature | Pediatric Kohler’s Disease | Adult Navicular AVN |
|---|---|---|
| Age of onset | 3-7 years (boys) / 2-5 years (girls) | 40-60 years typical; can occur at any adult age |
| Cause | Transient ischemia during ossification center development | Corticosteroid use, trauma, rheumatoid arthritis, idiopathic |
| Natural history | Self-limiting; radiographic reconstitution in 2-4 years | Progressive; rarely self-resolves without intervention |
| X-ray findings | Navicular sclerosis, flattening, fragmentation | Sclerosis, collapse, fragmentation; adjacent talonavicular and naviculocuneiform changes |
| Treatment philosophy | Symptomatic; short-leg cast 4-6 weeks; activity restriction | Joint-sparing early; salvage arthrodesis for collapse |
| Prognosis | Excellent — full recovery expected | Guarded; depends on stage at diagnosis |
Staging and Treatment of Adult Navicular AVN
| Stage (Ficat-Arlet adapted) | MRI Findings | X-ray Findings | Treatment |
|---|---|---|---|
| Stage I — Pre-collapse | Bone marrow edema; no contour change | Normal | Non-weight-bearing 6-8 weeks; core decompression (experimental) |
| Stage II — Sclerosis | Heterogeneous signal; no collapse | Increased density; mild flattening | Protected weight-bearing; CROW boot; total contact cast |
| Stage III — Collapse | Subchondral fracture; crescent sign; collapse | Navicular collapse; articular step-off | Surgical: navicular replacement or midfoot arthrodesis |
| Stage IV — Arthritis | Adjacent joint destruction; cartilage loss | Talonavicular and/or NC joint arthrosis | Triple arthrodesis or midfoot fusion; navicular excision with bone graft |
MRI is the diagnostic gold standard for early-stage adult navicular AVN — it detects bone marrow edema before X-ray changes appear. Early diagnosis and aggressive offloading are critical because navicular collapse dramatically worsens outcomes. Corticosteroid-associated AVN requires steroid dose reduction or cessation when clinically possible.
At Balance Foot & Ankle in Howell and Bloomfield Township, we evaluate midfoot pain and navicular conditions with MRI and weight-bearing imaging for accurate staging. Call (810) 206-1402.
American Academy of Orthopaedic Surgeons: Köhler Disease
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📋 Dr. Tom Biernacki, DPM, FACFAS answers:
Adult Kohler disease — also called Mueller-Weiss syndrome — is a distinct and more clinically serious condition than the pediatric form. Where childhood Kohler disease is a self-limiting osteochondrosis that reliably remodels to normal, adult navicular avascular necrosis involves permanent structural changes that progress without treatment and can lead to significant midfoot deformity and arthritis. The adult navicular is vulnerable to avascular necrosis because of its precarious blood supply — a single vessel enters the bone from each side with a watershed zone in the middle, making the central navicular susceptible to ischemia under certain conditions including repetitive stress, corticosteroid use, alcohol use, and systemic conditions like lupus. I see adult Kohler disease most often in middle-aged women, frequently in the context of a high-arch foot type that loads the midfoot excessively. The presentation is progressive medial midfoot pain, a visible or palpable prominence at the navicular, and characteristic X-ray changes showing navicular fragmentation, sclerosis, and medial deviation. CT and MRI provide much better characterization of the degree of navicular collapse. Treatment depends on severity: early cases respond to total contact casting to unload the navicular while revascularization is attempted, combined with protected weight-bearing for 3 to 6 months. For established collapse with significant deformity, surgical options include navicular core decompression, vascularized bone grafting, or midfoot fusion procedures. Early diagnosis before significant collapse significantly expands the range of limb-sparing options available.
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.