Comparison of two-dimensional and three-dimensional fluoroscopy based navigation in fixation of models with pelvic fracture

Objective To compare the 2D-fluoroscopy-based navigation technique with 3D technique in the treatment of pelvis fracture in order to supply more statistics and instructions for the future clinical work.Methods The screws were inserted in the bilateral pubic branch,ischial ramus and sacroiliac joint in 10 pelvis models and the related data were recorded.Results The mean time by 2D navigation was(45.2±4.6) min,which included calibration time:(1.6±0.3) min,images receipt time:(8.9±1.0) min,the screw insertion:(26.6±2.5) min.The mean length of the screw was(87.7±11.4) mm.The screw penetrated the articulation once.The mean time by 3D navigation was(54.8±3.0) min,which included calibration time:(1.5±0.3) min,images receipt time:(13.1±1.8) min,the screw insertion:(26.4±2.4) min.The mean length of the screw was(93.7±8.5) mm.The screw didn′t penetrate the articulation yet.Conclusions Navigation is currently an effective method for operatively treated pelvis fractures.It is a new way to treat the pelvis fracture minimal invasively and fix the fragment accurately under the complex anatomy of the pelvic.Compared to the 2D-fluoroscopy-based navigation,3D technique provides more advantages to the operation such as the construction of multi-plane images in a short time which give the surgeon more information about the fracture reduction and fragment fixation.Moreover,the 3D technique plays an important role in inserting the long screws accurately in the treatment of pelvis fracture.