II. Epidemiology

  1. Rare condition
  2. Age: Onset at age 2-8 years
  3. Gender: Boys affected 3-5 times more commonly than girls

III. Pathophysiology

  1. Unknown etiology
  2. Not associated with Trauma
  3. Avascular necrosis of Tarsal Navicular

IV. Symptoms

  1. Presents with midfoot pain and Pediatric Limp (favoring unaffected side)

V. Signs

  1. Local pain, tenderness, swelling over Tarsal Navicular

VI. Imaging: Foot XRay

  1. Flattening, sclerosis, fragmentation and irregularity of Tarsal Navicular

VII. Management

  1. Protect from excessive Trauma
  2. Rest
  3. Ice Therapy
  4. Short walking cast for 7-8 weeks

VIII. Prognosis

  1. Spontaneous recovery by rule
  2. Complete Navicular re-ossification in 2-3 years

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