A Study On Three Dimensional Morphological Analysis Of The Talus Fracture Lines

Objective: It is because of talus special anatomical structure and blood supply system,the fractures may involve multiple articular surfaces.There are high incidence of complications after injury.The aim of this study was to reconstruct the three-dimensional shape of fracture based on the original CT data and analyze the position and frequency of the talus fracture lines to guide the clinical treatment.Methods: 46 talus fractures were retrospectively reviewed.Separating and reconstructing talus fracture and then registering with standard template in Mimics 10.1.Delineating every fracture lines of talus model in the Geomagic Studio 12,and then projecting all of fracture lines to the surface of standard template.Results: All of the fracture lines of 48 talus fractures in 46 cases was projected on the surface of standard template.We observed the characteristics of fracture lines on a three-dimensional model that the fracture lines accounted for the head of talus,talus neck,talus body about 4.2%,37.5% and 58.3%,and the fracture lines ran horizontally across the talus neck and was scattered within the body.Conclusion: About 37.5% fracture lines located at the neck of talus,They are nearly perpendicular to the longitudinal axis of the talus body.It can be used for clinical guidance to implant the screw.58.3% fracture lines on the talus body are distributed and no obvious clustering.Its clinical significance is to provide accurate?individualized treatment.