ACCURACY OF FLUOROSCOPE AND NAVIGATED CONTROLLED HIND- AND MIDFOOT CORRECTION OF DEFORMITIES - A FEASIBILITY STUDY

摘要

The accuracy of the intraoperative correction of the correction operation of hind and midfoot deformities correlates with the clinical result. However, the intraoperative correction with fluoroscopy control is challenging. The aim of the study was to compare CT-based navigation correction operation of hind- and midfoot deformities with fluoroscopy controlled correction, Plastic models with defined deformities were used. The aim of the correction was to transform the shape of .the specimen with deformity to the shape of a normal plastic bone model. Two methods were used: 1. conventional C-arm, 2. navigated CT-based correction (Surgigate,-^sMedivision, Switzerland). The visualization was provided by the image only, the direct view of the surgeon was disabled by drapes. Following parameters were registered: 1. Time for procedure, 2. fluoroscopy time, 3. difference between corrected specimen and normal model. The accuracy of the correction operation with computer assisted navigation was higher than using conventional fluoroscopy in this experimental setting. In conclusion CAS might be a valuable tool in correction operation in foot surgery.