A technique of lateral process blockade for subtalar joint fusion: an easy, economical, and effective method to prevent rotation.

Abstract

One of the most common debates in discussing the technique of isolated subtalar joint arthrodesis is whether a single point of fixation is adequate to achieve joint fusion. The single screw technique places a fixation device in line with the subtalar joint axis of motion. Regardless of whether the screw is run up from the plantar calcaneus or down from the talar neck, rotational movement can occur about this axis. This motion increases the risk of delayed union, misalignment, and nonunion of bone. Therefore, the use of a second point of fixation has been considered by many surgeons to be prudent, as a method to further stabilize the site of fusion by preventing rotary motion about the interfragmental compression screw. The following is a description of a lateral talar process blockade using a cut and bent Rush rod. This method is an easy, economical, and effective method of preventing rotary motion at the talocalcaneal interface when performing subtalar joint fusion.