Fourteen patients with Kohler's bone disease of the tarsal navicular i
n 16 feet were reviewed at an average follow-up of 31 years 6 months a
fter diagnosis. The type and length of treatment did not affect the fi
nal outcome; however, short-leg cast immobilization did decrease the d
uration of symptoms. Two feet were symptomatic at the time of follow-u
p: one foot had a talocalcaneal coalition with degenerative changes, a
nd the other foot had a large accessory navicular. Both of these feet
were rated as having a fair result. The remaining 12 feet were classif
ied as having a good result. Patients with Kohler's bone disease can b
e expected to have a normal foot at adulthood. Should the patient beco
me symptomatic, other causes of foot pain should be investigated.