Further experience with Grice subtalar arthrodesis.

Between 1952 and 1973, 302 Grice-type subtalar arthrodeses were performed with a minimum follow-up evaluation of two years and a maximum follow-up evaluation of 22 years. Seventy-three feet were followed more than ten years. Seventy-three percent of the 244 operations done for poliomyelitis residuals were considered satisfactory. The number of cases in other diagnostic groups ranged from six to 18 and showed unpredictable results. The major reasons for an unsatisfactory result were fusion in unacceptable position (usually varus) and nonunion of the arthrodesis. Correct positioning of the subtalar joint at surgery is essential for a satisfactory result, and recommendations are made as to how to obtain such a position. Minimal degenerative arthritis of adjacent joints occurred in feet fused in acceptable positions.