Köhler Disease: A Limping 4-Year-Old Boy with Foot Pain

Case Presentation

A 4-year-old boy presented to the Emergency Department with a limp and pain in the left foot lasting for two days.

History

• Mother denied any history of trauma or falls.

Examination

• Mild swelling and tenderness were noted over the dorsum of the left foot.
• Vital signs were all within normal limits.

An X-ray of the affected foot was performed.

What Is the Diagnosis?

Upon careful review of the X-ray:

• The navicular bone appeared sclerotic, fragmented, hyperdense, small, and irregular.

This classic appearance leads to the diagnosis: Köhler Disease

Understanding Köhler Disease

What is Köhler Disease?

• A rare idiopathic condition caused by avascular necrosis of the navicular bone.
• Results in painful limp and localized tenderness over the navicular area.

Historical Note:

• First described by Dr. Alban Köhler, a German radiologist, in 1908.

Etiology:

• May follow minor trauma or occur without any prior injury.

Classification:

• Belongs to the group of crushing osteochondritis.

Epidemiology

• Prevalence: 2% of children.
• More common in boys (male to female ratio 5:1).
• Affects children aged 3–7 years.
• Usually unilateral, but bilateral involvement occurs in 25% of cases.

Radiographic Features

In Köhler Disease, the navicular bone typically appears:

• Sclerotic and hyperdense
• Fragmented and small
• Irregular compared to the normal navicular bone

Treatment

Conservative Management

• Pain control with rest and NSAIDs.
• Immobilization using a plaster cast (POP) in cases with severe symptoms.
• Orthopaedic follow-up is recommended.

Prognosis

• Excellent prognosis.
• Most cases resolve spontaneously within 6 to 48 months.
• No long-term disability reported.

Further Learning

Watch the full case discussion on YouTube

References

• Orthobullets: Köhler's Disease
• PubMed: Köhler's Disease Overview
• NCBI Bookshelf: Köhler Disease

Key Takeaways

• Always consider Köhler Disease in young children with an unexplained limp and localized foot pain.
• Early imaging is crucial to avoid misdiagnosis.
• Conservative management leads to full recovery without long-term complications.

Stay tuned for more intriguing pediatric radiology cases!

FAQ

Q1: What is Köhler Disease?

Köhler Disease is avascular necrosis of the navicular bone in children, leading to pain and limping, often resolving spontaneously with conservative treatment.

Q2: What are the common radiographic features of Köhler Disease?

The navicular bone appears sclerotic, hyperdense, fragmented, small, and irregular on X-rays.

Q3: How is Köhler Disease treated?

Treatment is conservative, involving pain management, rest, possible immobilization in a cast, and follow-up with orthopaedics.