Figure 1.

(A): Humerus bone segmentation based on CT DICOM files. 3D modeling is performed by first masking the area. (B): Humeral fracture design based on the 3D model. Surgical neck fracture and anatomical neck fracture were formed to create a 2-part fracture and 3-part fracture model, respectively. (C): Mesh structure for finite element analysis. The surface is a triangular mesh type and the volume mesh is conducted with the tetrahedral structure. (D): A screw and plate design according to the 3-part fracture was designed to fit perfectly with the bone; 9- and 6-screw models were applied above the surgical neck. (E): Elastic modulus distribution of osteoporotic and normal bone. Each elastic modulus was entered for each element according to the CT DICOM HU value.