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The purpose of this study is to investigate the femoral neck angulation forprediction of the complication associated with dynamic hip screw (DHS) surgeryand hip deformity. Three sample patients' MRI images were selected to calculatethe femoral neck angles. A total of six femur head geometries werereconstructed and three dimensional (3D) models printed. The calculation ofneck angles was done in both computer models and 3D-printed models. Our resultsshowed that 3D-printed models achieved high accuracy and provided the physicalmeasurements, when compared to the computer models could not confirm. Neckangulations related to uncomplicated DHS surgery ranged between129{\deg}-139{\deg}, and non-deformity of normal neck angles ranged between120{\deg}-135{\deg}. Our study indicated that patient-specific 3D printedfemoral head models provide useful information for medical education and assistDHS surgery. Further research based on a large sample size is necessary.

Femoral Neck Angle Impacts Hip Disorder and Surgical Intervention: A Patient-Specific 3D Printed Analysis