Köhler disease

Köhler disease
Synonyms	Aseptic necrosis of the tarsal bone, Kohler's Disease of the Tarsal Navicular, Osteochondritis of tarsal/metatarsal bone
Skeleton of foot. Medial aspect.
Classification and external resources
Specialty	rheumatology
ICD-10	M92.6
ICD-9-CM	732.5
DiseasesDB	7204
eMedicine	orthoped/410
Orphanet	2054

Köhler disease (also spelled "Kohler" and referred to in some texts as Kohler Disease II)^[1] is a rare bone disorder of the foot found in children between six and nine years of age. The disease typically affects boys, but it can also affect girls. It was first described in 1908 by Alban Köhler (1874–1947), a German radiologist.^[2][3]

It is caused when the navicular bone temporarily loses its blood supply. As a result, tissue in the bone dies and the bone collapses. When treated, it causes no long term problems in most cases although rarely can return in adults. As the navicular bone gets back to normal, symptoms typically abate.

In February 2010, the Journal of the American Medical Association reported that the 19-year-old king Tutankhamun may well have died of complications from malaria combined with Köhler disease II.^[4]

Symptoms

Sufferers experience pain and swelling in the middle part of the foot and usually limp as a result. Patients that walk with a limp tend to walk with increased weight on the lateral side of the foot. Also, there can be tenderness over the navicular. Patients often complain of pain over the apex. An X-ray of both feet is used to diagnose disease. The affected foot tends to have a sclerotic and flattened navicular bone.

Treatment

Treatment usually involves resting the affected foot, taking pain relievers and trying to avoid putting pressure on the foot. In acute cases, the patient is often fitted with a cast that stops below the knee. The cast is usually worn for 6 to 8 weeks. After the cast is taken off, some patients are prescribed arch support for about 6 months. Also, moderate exercise is often beneficial, and physical therapy may help as well.

Prognosis for children with this disease is very good. It may persist for some time, but most cases are resolved within two years of the initial diagnosis. Although in most cases no permanent damage is done, some will have lasting damage to the foot. Also, later in life, Kohler's disease can spread to the hips.

References

External links

• Mayo Clinic
• PedRad
• WebMD
• DrFoot
• "Kohler disease". Genetic and Rare Diseases Information Center (GARD). National Institutes of Health, The Office of Rare Diseases Research (ORDR).