Köhler's bone disease of the tarsal navicular.

Fourteen patients with Köhler's bone disease of the tarsal navicular in 16 feet were reviewed at an average follow-up of 31 years 6 months after diagnosis. The type and length of treatment did not affect the final outcome; however, short-leg cast immobilization did decrease the duration of symptoms. Two feet were symptomatic at the time of follow-up: one foot had a talocalcaneal coalition with degenerative changes, and the other foot had a large accessory navicular. Both of these feet were rated as having a fair result. The remaining 12 feet were classified as having a good result. Patients with Köhler's bone disease can be expected to have a normal foot at adulthood. Should the patient become symptomatic, other causes of foot pain should be investigated.