New method of assisting in completing whole process of acetabular posterior wall fracture operation with internal fixing frame system

Abstract

The invention relates to a new method for assisting in completing the whole process of an acetabular posterior wall fracture operation with an internal fixing frame system, and belongs to the technical field of medical treatment. The new method comprises the steps that a personalized 3D printed steel plate and a place occupying machine are designed and manufactured; assembling parts of the personalized 3D printed steel plate and the place occupying machine are installed: the personalized 3D printed steel plate and the place occupying machine are firstly assembled in vitro, then the placement and installation of the steel plate is guided by using the matching of the place occupying machine and a fracture defect area, and a temporary fixing function is achieved; screws are inserted into a pelvic area outside a fracture block, and the steel plate is fixed; and construction of a metal internal fixing frame is completed. An optimal nailing path and depth are designed in advance, and corresponding guiding tools are designed, so that the exposure scope of anatomy is reduced, the damage of organism is reduced, and infirm fixation of the screws and accidentally injury of other structures are avoided.

Description

technical field [0001] The invention relates to a new method for an internal fixation frame system to assist in completing acetabular posterior wall fracture surgery throughout the whole process, and belongs to the field of medical technology. Background technique [0002] Fracture open reduction and internal fixation surgery: refers to a surgical method in which the fracture area is first exposed through surgical methods, then the fracture is reduced, and then internal fixation is performed. It is a combined process of fracture reduction and fracture fixation. [0003] Acetabular fracture: The hip bone is composed of three parts: the ilium, ischium, and pubic bone. There is a large and deep socket on the outer surface called the acetabulum, which forms the hip joint with the femoral head. Acetabular fractures refer to fractures in which the continuity or integrity of the bone in the acetabular region is disrupted. [0004] Acetabular fractures are the most difficult type o...

AI Technical Summary

Problems solved by technology

[0005] Preoperative examination: Can not fully understand the disease; surgical planning can only rely on imagination, simulate the operation in the mind to determine the surgical plan; no personalized biomechanical design

[0006] Open reduction: the range of incision and anatomical exposure can only be based on experience, and the exposure range is wide and the tissue damage is large; precise reduction cannot be achieved; temporary fixation during operation is not firm

[0007] Internal fixation: The fixation device cannot be accurately estimated before the operation, and sometimes a large number of products of various types need to be prepared; the shape of the internal fixation device needs to be shaped by hand during the operation, the matching degree is poor, and the biomechanical performance is not reliable; the installation of the fixation device is often difficult. Relying on experience, strong internal fixation cannot be achieved; after the internal fixation is completed, the fracture fragments are easy to loosen; the screw installation path is random and the controllability is small, which may easily lead to unreliable fixation or damage to other important structures; repeated temporary fixation is often required. Fixation and repeated fixation of the device cause additional damage to the body; some require repeated intraoperative X-ray fluoroscopy

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