QUANTIFICATION OF POST-OPERATIVE CORRECTION OF FOOT POSTURE THROUGH NEW ANATOMICAL REFERENCE SYSTEMS

The quantitative analysis of the three-dimensional foot posture is a topic of clinical and scientific interest [1], recently boosted by the diffusion of low dose Weight-Bearing CT scanner. This makes it possible to overcome the limit of the traditional 2D measurements made with X-Ray radiography [2]. However, to efficiently quantify the foot posture in 3D, the definition of anatomical reference systems (ARS) is needed to calculate the position and orientation of all the bones in the foot, still lacking in the literature [3]. The aim of the study is to test a new technique for the definition of ARS based on articular morphology [4]. In order to verify its clinical applicability, the technique is tested to measure the post-operative correction in flat feet after clinical intervention, comparing the surgery outcomes with healthy feet for a reference.