Compression arthrodesis of the ankle by triangular external fixation: an improved technique.

In this preliminary report, the authors present a new application of an external tubular fixation system for compression arthrodesis of the ankle. A triangular ankle fusion frame was designed that provides rigid immobilization of the tibiotalar joint, with midfoot control provided by a metatarsal pin. Over the past 3 years, the authors have used this device to achieve solid tibiotalar arthrodesis in 12 of 14 patients. The surgical method, including step-by-step construction and application of the triangular ankle fusion frame, is presented. Early results suggest a nearly 90% union rate, including reoperative cases for failed primary fusion.