Ilizarov Method for Gradual Deformity Correction

The Ilizarov circular external fixation device achieves circumferential 3-dimensional fixation to bones through multidirectional and multiplanar wires and half-pins. Its modular construction allows for gradual correction of angulation, rotation, and translation. The Ilizarov hinge makes the fixator unique in its ability to correct deformities in a controlled fashion. A systemic and scientific approach to deformity correction must be taken, and the geometry of the deformity must be respected according to the center of rotation of angulation (ie, CORA) method of mechanical and anatomical axial planning. The osteotomies are performed according to 3 rules. There are many indications for gradual deformity correction, with the main purpose being to avoid stretch damage to the neurovascular structures at risk while correcting, for example, malnonunited fractures. The Ilizarov method to gradually correct bony and soft-tissue deformities is presented.