Kohler Disease

Condition 101

What is the definition of Kohler Disease?

Kohler disease is a condition that affects a bone at the arch of the foot called the tarsal navicular bone. X-rays show that this bone is initially compressed and later breaks into pieces before healing and hardening back into bone. It occurs most frequently in children between the ages of 5 an ...

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What are the alternative names for Kohler Disease?

  • Kohler's Disease
  • Kohler's Disease of the Tarsal Navicular
  • Kohler's Osteochondrosis of the Tarsal Navicular
  • Navicular Osteochondrosis
  • Aseptic necrosis of the tarsal bone
  • Osteochondritis of tarsal/metatarsal bone
  • Osteochondrosis of the tarsal bone
  • OBSOLETE: Osteochondritis of tarsal/metatarsal bone

What are the causes for Kohler Disease?

The exact underlying cause of Kohler disease is unknown. However, some scientists suspect that it may be caused by excessive strain on a certain bone of the foot (tarsal navicular bone) and its associated blood vessels before the bone is completely ossified (hardened).

Bone ossification usually begins at age 18-24 months in girls and at age 24 to 30 months in boys. As the child grows, their foot is required to support more weight. Ossification of the tarsal navicular bone often occurs more slowly than the other bones of the foot. Consequently, surrounding bones may compress it and its blood vessels resulting in osteonecrosis and ischemia (a loss of blood supply).

What are the symptoms for Kohler Disease?

The signs and symptoms of Kohler disease vary, but may include:
  • Swelling of the foot
  • Redness of the affected area
  • Tenderness, particularly along the length of the arch
  • Limp or abnormal gait (style of walking)
Symptoms may worsen if weight is put on the affected foot, which can make walking painful and difficult.

What are the current treatments for Kohler Disease?

Kohler disease typically resolves over time with or without treatment. However, pain relievers, rest and avoidance of weight-bearing activities can help alleviate some of the symptoms. In some cases, a plaster walking cast and/or arch supports may also be recommended.

What is the outlook (prognosis) for Kohler Disease?

The long-term outlook (prognosis) for people with Kohler disease is usually excellent. Symptoms can last from a few days to two years; however, most cases resolve within a year. People affected by the condition typically recover all function of the affected foot and have no lasting consequences.

How is Kohler Disease diagnosed?

A diagnosis of Kohler disease is suspected based on the presence of characteristic signs and symptoms. An x-ray of the foot can be used to confirm the diagnosis and evaluate the progression of the condition.

Is Kohler Disease an inherited disorder?

The exact underlying cause of Kohler disease is currently unknown. Although some scientists have suggested that genetic factors may play a role in the development of Kohler disease, no disease-causing gene has been identified.

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