Customized positioning device for hip joint surgery and supporting prosthesis based on medical images

Abstract

The invention discloses a customized hip joint surgical positioning device based on medical images, a matched prosthesis and a positioning method. An eccentric positioning hole for positioning a short eccentric handle is formed in the acetabulum according to preoperative planning, meanwhile effectively cutting off damaged acetabular bone in the acetabulum based on a drilling nail corresponding to the central axis of an acetabulum prosthesis and achieving effectiveness and accuracy of the transplantation position of the acetabulum prosthesis. The positioning accuracy in operation is improved, the usage cost is reduced, meanwhile surgeons are not required to be trained specially, the prosthesis is simple and convenient to operate and install, a three-dimensional coordinate position of the prosthesis during installation is determined, the time for required calibration in operation is shortened, and operation efficiency is improved. The peripheral positioning of the acetabulum prosthesis is achieved and high-accuracy installation of the acetabulum prosthesis is ensured when the short eccentric handle is arranged on the acetabulum prosthesis and installed in the acetabulum.

Description

technical field [0001] The invention belongs to the technical field of hip joint replacement, and in particular relates to a medical image-based customized positioning device for hip joint surgery, a supporting prosthesis and a positioning method. Background technique [0002] Osteoarthritis (OA) is a chronic joint disease characterized by degeneration and destruction of articular cartilage and bone hyperplasia. Osteoarthritis has symptoms of joint pain, stiffness, deformity, and dysfunction, which directly constitute a hazard to the patient and affect the patient's health and quality of life. The incidence of osteoarthritis is closely related to age. The incidence rate of 45-64 years old is less than 30%, and the incidence rate of over 65 years old can be as high as 68%. Second to heart disease. [0003] The treatment of osteoarthritis is still a major problem facing the medical field. Conservative drug treatment often fails to achieve results, and surgery is still requir...

AI Technical Summary

Problems solved by technology

Compared with the rapidly growing number of patients, the number of qualified joint replacement surgery doctors in China is very short, and traditional methods are difficult to quickly train a large number of qualified doctors

[0004] The traditional artificial joint positioning method is mainly based on mechanical instruments to complete the positioning of the positioning system, the operation is complicated and the accuracy is limited

Although the computer navigation system used in surgery has been believed to replace the traditional mechanical positioning method in the past few decades and bring revolutionary changes to artificial joint surgery, until today, the existing surgical navigation system equipment is still Expensive, the positioning accuracy still needs to be improved, and at the same time requires the surgeon to receive special training, and the calibration required during the operation will inevitably prolong the operation time

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