Abstract:

BACKGROUND: The two-dimensional map of total hip surface replacement (THSR) can only be observed one aspect of the three-dimensional (3D) anatomical structure, but can not fully grasp the overall 3D structure.
OBJECKTIVE: 3D reconstruction of THSR by Amira4.1 based on the operational platform of personal computer and to establish their digitized visible models.  
METHODS: A pelvic surgery patients underwent multi-slice spiral CT scan after THSR. The location of implant form was observed. The original data were entered personal PC with .dicom, the segmented areas for structures were displayed in different colors using tools of Brush, Lasso and Magic wand, the 3D reconstruction of the hip and pelvis for obtaining 3D shape of the hip joint and the implant location of structures basing on anatomical characteristics. 
RESULTS AND CONCLUSION: Structure was reconstructed. The 3D images of pelvis, hip and implant shape structure by Amira were clear and surface and volume information could be obtained. The 3D images could display perfectly the main structures of hip and implant shape and other adjacent structures by means of personal computer and software Amira4.1. The 3D structures can be multi-colored, transparent or any combination of displays. The overall showed clear physical sense after different perspectives observing. The location of the prosthesis surface morphology could be clearly observed in 3D image. THSR surface replacement prosthesis size, angle and stability could be visual particularly. Femoral head could be accurate measured. It is revealed that 3D computerized THSR reconstruction provides great value for clinical experiments, basic research and surgical planning, and its Amira4.11 software is vital for 3D reconstruction.