X-Ray based navigation system for torsional correction - first clinical data

摘要

Aims and Objectives: It is well known that treatment of femoral shaft fractures can lead into torsional malalignment. In up to 15% of these cases a torsional correction is necessary. Further there are congenital torsional abnormities causing disbalances in the knee joint. In both cases a torsional correction osteotomy can be helpful. However the results of these kind of osteotomies can defer from the planned correction-angle. There are various intraoperative tests to check the corrected angle with the planned one. But still there are a lot of unsatisfying results. It is well known that there exist navigation systems for this kind of surgery. But usually they are expensive, time consuming and need a lot of hardware. The so called X-in-One system is a truly x-ray-based navigation system. Besides the c-arm two probes and one tablet pc are needed. The objective of this study was to proof the feasibility in a clinical setting. Additionally it was meant to be a validity check.