Method for digitalized pre-bending and navigation embedding of acetabulum internal fracture fixation locking reconstruction bone fracture plate

Abstract

The invention discloses a method for digitalized pre-bending and navigation embedding of an acetabulum internal fracture fixation locking reconstruction bone fracture plate, and relates to the technical field of medical treatment. The method comprises the following steps that 1, a virtual acetabulum locking reconstruction bone fracture plate and a nail path are manufactured; 2, pre-operation data is collected, and virtual bone fracture reduction is performed; 3, Mimics software multi-section cutting combination is performed to construct a virtual locking acetabulum reconstruction bone fracture plate; 4, a 3D printing virtual bone fracture plate is used for guiding pre-bending; 5, Mimics software is adopted for designing and locking navigation templates at the two ends of the reconstruction bone fracture plate; 6, 3D printing of the navigation templates and implementation are performed. The steps of the virtual design operation plan are simplified, pre-bending of the bone fracture plate is precisely guided, the navigation templates with the high surgical operation feasibility are designed, and the internal fixation surgery can be more precisely implemented; the operation difficulty is expected to be lowered, soft tissue damage, periosteum stripping and important structure damage are reduced, the bleeding and surgical time is shortened, X-ray perspective radiation injuries are relieved, and surgical complications are reduced.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a method for digital pre-bending and navigation implantation of an acetabular fracture internal fixation locking reconstruction bone plate. Background technique [0002] Acetabular fractures are mostly high-energy injuries, severe injuries, deep positions, irregular shapes, complex anatomical relationships, ever-changing surgical methods, and high surgical technical requirements, which make clinical orthopedic surgeons face many challenges, including the choice of surgical approach, related anatomical Familiarity, reduction techniques, fracture fixation techniques, etc. The limited operating window of traditional empirical surgery often makes it difficult to judge the adjacency relationship of anterior and posterior columns of the acetabulum, quadrilateral, articular surface and other anatomical structures, resulting in indirect and non-intuitive surgical operations that often r...

AI Technical Summary

Problems solved by technology

The limited operating window of traditional empirical surgery is often difficult to judge the adjoining relationship of anterior and posterior columns, quadrilaterals, articular surfaces and other anatomical structures, resulting in indirect and non-intuitive surgical operations that often require extensive exposure

In addition, there are many difficulties in the placement of the bone plate, whether the screws in all directions touch or break into the joint cavity, and whether the fracture block can be fixed in all directions, etc., often make the clinician bend and adjust the bone many times during the operation. The position of the plate; whether the direction and length of the screw are optimal for multiple X-ray fluoroscopy observations, repeated screw placement will lead to bone destruction, extensive soft tissue incision and periosteum stripping, prolonged operation time and unstable fracture fixation, etc., which will affect the surgical effect and Prognosis

Although the commonly used CT three-dimensional reconstruction images can improve the surgeon's knowledge and understanding of acetabular fractures for surgical reference, their disadvantages are static and planar images, which cannot allow the surgeon to perform fracture reduction and fixation before surgery. simulated operation

In actual work, clinicians often simulate fracture reduction in their minds and imagine a series of surgical steps based on imaging studies such as CT examinations combined with their own understanding of the normal anatomy of the pelvis and acetabulum, but the information obtained is still limited and cannot help determine the best surgery Program

Therefore, the common problems in the operation of acetabular fractures are as follows: (1) The accuracy of the twisted radian and bending angle of internal fixation affects the effect of fracture reduction

(2) The depth and direction of the screw cannot be accurately judged during the operation, and the judgment is based on the experience of the surgeon

(3) It is difficult to reveal the whole picture during the operation, and the degree of attachment of the bone plate during the operation seriously affects the quality of reduction

(4) Repeated bending of the bone plate, especially the locking bone plate, prolongs the adjustment time during operation, resulting in the loss of biomechanical properties of internal fixation

(5) Potential health hazards caused by repeated intraoperative fluoroscopy to increase the radiation intake of the operator and patients

[0008] The above existing technologies have the following defects: 1. The multi-plane three-dimensional measurement and bone plate pre-bending method are cumbersome, lack of objectivity, and the accuracy needs to be improved

2. 3D printing technology assists in acetabular fracture surgery. Most of the acetabular model entities are printed as a whole or part of the acetabular model for intraoperative reference comparison. There is no design and printing of navigation templates to assist accurate implementation of surgery

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