Characteristic parameter based bone fracture plate serial design method

Abstract

The invention discloses a characteristic parameter based bone fracture plate serial design method. The method is characterized by comprising a first step of parameterizing a bone model; a second step of parameterizing a fitting surface of a bone fracture plate; and a third step of establishing a mapping relation between a bone characteristic model and the characteristic of the fitting surface of the bone fracture plate so as to generate a series of fitting surfaces of the bone fracture plate according to bone models of different parameters. In the first step, a bone curved surface model is established based on an average point cloud model including statistic information, and parametric representation is performed on the bone curved surface model so as to generate the bone characteristic model. In the second step, the fitting surface of the bone fracture plate is reconstructed with a characteristic line as the center, and parameter configuration is performed on the fitting surface of the bone fracture plate so as to generate the characteristic of the fitting surface. According to the method, multiple types of serial bone fracture plates suitable for bones of patients can be rapidly designed, number of times of adjusting of the bone fracture plate in operation is reduced, and the method has significance for improvement of quality and efficiency of the bone fracture plate design.

Description

technical field [0001] The invention relates to a digital orthopedics technology, in particular to a serial design method of bone plates based on characteristic parameters, and belongs to the field of computer-aided design. Background technique [0002] The formation of the concept of digital orthopedics has made the bone plate a common tool for clinical treatment of bone fractures and lesions. The bone plate must conform to the surface of the affected bone and maintain a certain topological structure, so its design is an important part of orthopedic computer-aided design. [0003] There are many types of human bones, and the same bone has differences in age, gender, and region. Considering the time-consuming, expensive and other restrictive factors of personalized design, the manufacturer mass-produces a series of bone plates of various types in advance for doctors to choose and use. However, due to historical reasons and technical limitations, domestic manufacturers of b...

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Problems solved by technology

At the same time, the surface of the bone presents a complex curved surface, and the fracture location varies greatly. Even if the manufacturer of the bone plate divides the model of the bone plate into a fine enough size, the matching surface of the bone plate and the surface of the traumatic bone is still unsatisfactory

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