![]() Hence, we placed the largest diameter virtual screw in the two different screw corridors. Finally, we used an axial perspective based on 3D models in order to study the anatomical parameters of the two infra-acetabular screw corridors with different exit points. Additionally, the STL format image processed by Geomagic Studio was imported again into MIMICS. Then, the models, in the STL format model, were imported into the software Geomagic Studio to delete the inner triangular patches. The raw datasets were reconstructed into 3D models using the software MIMICS. We conducted this study in order to determine the anatomical differences between the two different IACs. However, our significant experience in placement of the infra-acetabular screw has suggested that when the exit point is located between the ischial tuberosity and the ischial spine (Screw II), the placement of a 3.5 mm infra-acetabular screw may be easier for some patients. Currently, the reported exit point of the infra-acetabular screw has been located at the ischial tuberosity (Screw I). Biomechanical studies have shown that an additional infra-acetabular screw placement can enhance the fixation strength of acetabular fracture internal fixation. ![]() Recently, the infra-acetabular screw has been proposed for use in treatment of acetabular fractures as a part of a periacetabular fixation frame. ![]()
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