The Design of Deformed Femur Osteotomy System

Abstract

In order to achieve more accurate deformity femoral osteotomy, a software system for deformity femoral osteotomy was designed to facilitate the clinical preoperative simulation. First, 3D modeling was simulated using Mimics17.0 and saved as STL file. Then, MFC and OpenGL was utilized to build the deformed femur osteotomy system, the accurate osteotome position and osteotomy angle were obtained by fitting the axis of the deformed femoral shaft and the geometric center of the greater trochanter of femoral head. Finally, mock splicing was performed to determine the postoperative neck angle. A case of abnormal femoral STL model was introduced into the osteotomy system and whose collodiaphyseal angle was measured as 57.7 °, input osteotomy angle was 60 °, and the postoperative collodiaphyseal angle was measured to be 102.3 ° after completing the osteotomy simulation. The experimental results show that the system can quickly provide doctors with a more accurate osteotomy program, as well as preoperative surgical simulation, which will save the doctor's clinical diagnosis time and increase the accuracy of osteotomy.