Fig. 1

The process of generating the 3-D structure of the proximal humerus. a The humerus, scapula, clavicle, and other bones were extracted by 3-D interactive and automatic segmentation technique after SSD reconstruction, and different colors were assigned to the different bones. b Proximal humerus and scapula were marked yellow and gray, respectively, and other bones were deleted. c The proximal humerus was extracted solely