Pelvis registration method, pelvis registration device and pelvis registration system

Abstract

The invention provides a pelvis registration method, device and system, and the method comprises the steps: carrying out the registration of a three-dimensional model of a pelvis and an actual pelvis according to at least three first mark points, and obtaining a primary registration model, the first mark points being any point of the three-dimensional model; determining a plurality of mark point groups according to the primary registration model, wherein any mark point group comprises a first mark point and a second mark point, the second mark point is obtained by projecting the first mark point on the primary registration model after the first mark point is translated by a preset distance, and one translation corresponds to one mark point group; calculating a root-mean-square error between the distance between the first mark point and the corresponding second mark point in each mark point group and the actual distance to obtain a plurality of errors; determining at least one preferred point set according to the error; determining a preferable area of the mark points according to the preferable point group; selecting at least three third mark points in the preferable area; and registering the primary registration model and the actual pelvis according to the third mark point to obtain a secondary registration model.

Description

technical field [0001] The present application relates to the technical field of pelvic registration, and in particular, relates to a pelvic registration method, a pelvic registration device, a computer-readable storage medium, a processor, and a pelvic registration system. Background technique [0002] Although artificial joint replacement is very mature now, due to many reasons such as prosthetic loosening (bacterial / sterile), periprosthetic fractures, prosthetic dislocation, etc., there are still patients after primary joint replacement. A larger fraction required revision surgery. [0003] Due to the many reasons for revision surgery and the complexity of the condition, performing joint revision surgery requires extremely high surgical techniques and rich surgical experience. Even so, the satisfaction rate of revision surgery is still relatively low. Reasonable filling of the defect is an important step in joint revision surgery. With the development of 3D printing te...

AI Technical Summary

Problems solved by technology

[0008] The main purpose of this application is to provide a pelvic registration method, a pelvic registration device, a computer-readable storage medium, a processor and a pelvic registration system, so as to solve the problem of low pelvic registration accuracy in the prior art

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