Orthopedics Book



  • Kohler Bone Disease


Kohler Bone Disease

Aka: Kohler Bone Disease, Kohler's Disease, Avascular Necrosis of the Tarsal Navicular, Tarsal Navicular AVN
  1. See Also
    1. Osteochondritis
    2. Pediatric Limp
  2. Epidemiology
    1. Age: Onset at age 2-8 years
    2. Gender: Boys affected 3-5 times more commonly than girls
  3. Pathophysiology
    1. Unknown etiology
    2. Not associated with Trauma
    3. Avascular necrosis of Tarsal Navicular
  4. Symptoms
    1. Presents with midfoot pain and Pediatric Limp
  5. Signs
    1. Local pain, tenderness, swelling over Tarsal Navicular
  6. Imaging: Foot XRay
    1. Flattening, sclerosis, fragmentation and irregularity of Tarsal Navicular
  7. Management
    1. Protect from excessive Trauma
    2. Short walking cast for 7-8 weeks
  8. Prognosis
    1. Spontaneous recovery by rule
    2. Complete Navicular re-ossification in 2-3 years
  9. References
    1. Atanda (2011) Am Fam Physician 83(3): 285-91 [PubMed]
    2. Borges (1995) J Pediatr Orthop 15(5): 596-8 [PubMed]

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