Köhler’s disease is an avascular necrosis (osteonecrosis) of the tarsal navicular bone occurring in young children — most commonly between ages 3–7, with boys affected approximately four times more often than girls. It is a self-limiting condition with an excellent prognosis for complete recovery, but accurate diagnosis is important to distinguish it from other causes of midfoot pain in children and to provide appropriate management to reduce symptoms and prevent deformity during the healing phase.

Why the Navicular Is Vulnerable in Children

The tarsal navicular is unique in the developing foot: it ossifies later than surrounding bones (typically ages 18–24 months in girls, 24–30 months in boys) and receives its blood supply through vessels that enter from the edges rather than through multiple perforators. This creates a period of relative vascular vulnerability when compressive forces from the developing foot architecture exceed the bone’s ability to maintain adequate blood flow. The result is temporary ischemia, bone fragmentation, and remodeling — which gradually resolves as collateral circulation develops and the bone fully ossifies.

Clinical Presentation

Affected children present with: midarch pain and tenderness over the navicular (the bony prominence on the inner midfoot), antalgic gait (limping, often walking on the lateral border of the foot to offload the painful medial arch), mild local swelling, and pain with activity that improves with rest. There is no history of significant trauma — the onset is typically insidious. The condition is unilateral in most cases.

Diagnosis

Weight-bearing foot X-rays reveal the characteristic findings: navicular sclerosis (increased density), flattening, and fragmentation — the navicular appears “squashed” compared to the contralateral side. The radiographic appearance can be alarming to parents, but it reflects the remodeling process rather than catastrophic bone destruction. MRI is rarely needed for diagnosis but demonstrates bone marrow edema and confirms avascular changes in uncertain cases.

The key differential diagnosis is a bipartite navicular (normal variant) and navicular stress fracture — both distinguishable by age, clinical presentation, and X-ray characteristics.

Natural History and Prognosis

Köhler’s disease is self-limiting. The navicular remodels and returns to normal radiographic appearance in virtually all cases within 2–4 years. Long-term studies have documented normal foot function in adulthood without residual deformity or arthritis. This favorable natural history distinguishes Köhler’s from Freiberg’s infraction (metatarsal head osteonecrosis) and other osteochondroses with less predictable outcomes.

Treatment

Treatment is directed at symptom management during the healing phase:

• Activity modification: Reduce high-impact activities during painful episodes. Swimming and cycling are well-tolerated alternatives.
• Supportive footwear and arch support: Medial arch support reduces compressive loading on the navicular. Custom orthotics or over-the-counter arch supports with a navicular pad are helpful.
• Short-leg walking cast: For children with significant pain and antalgic gait, a walking cast for 4–8 weeks provides dramatic symptom relief and allows the child to maintain activity. Several studies have suggested casting may accelerate radiographic healing, though the evidence is modest.
• NSAIDs: Short-term use for pain management during acute symptomatic periods.

Surgical intervention is never indicated for Köhler’s disease given its universally favorable natural history.

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.