Individualized femoral fracture reduction model construction method

Abstract

The invention discloses an individualized femoral fracture reduction model construction method. The method comprises the steps that based on the parameterized femoral surface model construction technology, an equalized femoral deformation template is created, femoral anatomical feature points and reference points are defined, a patient's femoral simplification model is created, and an individualized approximation model is constructed; each anatomic point set in the femoral simplification model is subjected to registration of each corresponding anatomical point set in the approximate femoral model, then a deformation matrix is solved, and the automatic reduction of a corresponding fracture segment in the fracture model is achieved; a fracture profile of each fracture segment in the fracture simplification model is extracted, and projection interception are performed on each corresponding surface in the approximate femoral model, wherein each surface is smoothly connected with the adjacent surface, and a patient's individualized femoral fracture reduction model is construct. The method can construct the individualized fracture model intuitively and promptly through patient's femoral fracture segment reduction and comminuted part surface reconstruction, and has an important guiding significance to the guidance of femoral fracture surgical treatment and patient's bone plate individualized design in an orthopedic surgery by a doctor.

Description

technical field [0001] The invention relates to a digital femur modeling technology, in particular to a method for constructing a personalized femur fracture reduction model, and belongs to the field of computer-aided design. Background technique [0002] With the aging of the global population and the increase in road traffic accident injuries, human femoral fractures are on the rise year by year, and most of them are complex comminuted fractures. Surgical treatment has become the most effective method for the treatment of comminuted femoral fractures. Computer-assisted orthopedic surgery provides effective technical support for fracture treatment and has become the fastest-growing research field. It is one of the most important issues in computer-aided orthopedic surgery to effectively reduce the displaced fracture fragments to the normal anatomical position and to construct an individualized skeletal fracture reduction model. The reference document (CN104622559A) disclos...

AI Technical Summary

Problems solved by technology

Manual splicing is the manual reset of the fracture fragments one by one by the doctor. Its main disadvantages include: the accuracy of the reset model largely depends on the doctor's experience; at the same time, the efficiency of model construction is low

Statistical reconstruction uses an approximate bone model to replace the patient's individual model. Its main shortcomings include: it is difficult to effectively represent the characteristics of individual femur shape differences; the approximate bone model is difficult to represent fracture trace information, and it is difficult to guide doctors in targeted surgical treatment for individual patients

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