Dual motorized hexapod singular external fixator frame construct for knee and ankle contracture deformities: A novel technique & case study

Abstract

External fixators can be used in a variety of ways to treat orthopedic pathologies. Fixators have evolved with better understanding of osseous healing and tissue manipulation. The development of hexapods for three-dimensional deformity correction has aided the surgeon with the most challenging of cases. This was advanced with the aid of computer modeling attached to motors to turn the struts for more accurate correction. Our case demonstrates the successful application and utilization of a dual motor dual hexapod singular construct frame for deformity correction of contractures at the knee and the ankle over the course of 45 days for gradual correction. To the authors knowledge there has not been any reports of the use of a dual motor dual hexapod singular construct frame in a single limb for deformity correction.

Keywords

• Foot
• Ankle
• Knee
• External fixator
• Fine wire frame
• Deformity correction