Subtalar arthrodesis with correction of deformity after fractures of the os calcis

We have reviewed the long-term results of 22 patients (23 fusions) with fra ctures of the os calcis, who had subtalar arthrodesis with correction of th e deformity between 1975 and 1991, The mean follow-up was nine gears (5 to 20), All patients were evaluated according to a modified foot score. A radiologi cal assessment was used in which linear and angular variables were measured including the fibulocalcaneal abutment, the height of the heel and fat pad , the angle of the arch and the lateral talocalcaneal and the lateral talar declination angles. The technique used restores the normal relationship between the hindfoot an d midfoot and corrects the height of the heel. This leads to better biomech anical balance of the neighbouring joints and gives a favourable clinical o utcome, The modified foot score showed a good or excellent result in 51% of the fee t. Residual complaints were mostly due to problems with the soft tissues. S ubjectively, an excellent or good score was achieved in 78% of the cases. After statistical analysis, except for the height of the heel and the degen erative changes in the calcaneocuboid joint, no significant difference was found in the measured variables between the operated and the contralateral side.