[Hindfoot arthrodesis].

Arthrodesis of the hindfoot is indicated in congenital foot deformity of young adults, in posttraumatic arthrosis of the subtalar joint following calcaneus fractures, in idiopathic, isolated arthroses of hindfoot joints, in rheumatoid arthritis and in deformities of the longitudinal arch of the foot. Common and useful combinations are the triple-arthrodesis and the arthrodesis of the subtalar and the calcaneocuboid joint, in particular if both joints are affected by calcaneus fractures. Arthrodesis of the subtalar and the talonavicular joint are often performed as isolated procedures. The three-dimensional structure of the hindfoot articulations may impede perfect contact of the bone surfaces in combined arthrodeses. Various fixation methods are in use. Follow-up examination of 52 arthrodeses after 11.1 years revealed good, symptomatic improvement in most patients. However, complete bony union was achieved in only 47 percent, and this was due to insufficient stabilization of the arthrodesis in many cases. In view of comparable rates of pseudarthroses in the literature, we advocate stable internal fixation with screws or bone staples.