Method for manufacturing navigation template for knee replacement, and navigation template

A knee joint replacement and navigation template technology, applied in joint implants, joint implants, applications, etc., can solve the problem that the navigation system does not solve the problem of anatomical reconstruction of the biomechanical axis of the lower limbs, so as to improve the follow-up effect, Avoid the effect of offset and get rid of the learning curve

Active Publication Date: 2012-10-31
中国人民解放军联勤保障部队第九二〇医院
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Problems solved by technology

Therefore, the navigation system itself does not solve the problems of anatomical reconstruction of the biomechanical axis of the lower limbs and the axis of rotation of the prosthesis.

Method used

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  • Method for manufacturing navigation template for knee replacement, and navigation template
  • Method for manufacturing navigation template for knee replacement, and navigation template
  • Method for manufacturing navigation template for knee replacement, and navigation template

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Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The present invention utilizes the reverse engineering technology principle of new engineering, adopts CT technology to obtain the CT data of the hip joint, knee joint and ankle joint, uses the CT data to construct the three-dimensional reconstruction model of the femur and the tibia, and combines the three-dimensional model of the femur and the tibia with the three-dimensional After merging the three-dimensional structures, the 3D reconstruction models of the femur and tibia were removed respectively to obtain a cube model containing the outline of the femur and a three-dimensional structure model containing the outline of the tibia, and then the template design operation and entity fabrication were performed to obtain the f...

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Abstract

The invention relates to a method for manufacturing a navigation template for knee replacement. The method comprises the following steps of: scanning a hip joint, a knee joint and an ankle joint through computed tomography (CT) to obtain CT data, and establishing three-dimensional reconstruction models of femur and tibia according to the CT data; respectively carrying out combination on the three-dimensional reconstruction models of thigh bone and shin bone with a three-dimensional structure, and respectively removing the three-dimensional structure models of femur and tibia from the three-dimensional structure; according to the knee replacement process, carrying out distal femoral virtual osteotomy on the three-dimensional structure model containing the femur contour, and carrying out proximal tibia virtual osteotomy on the three-dimensional structure model containing the tibia contour; and establishing virtual femur condyle navigation template and a virtual tibia platform navigation template, and manufacturing an entity condyle navigation template and an entity tibia platform navigation template. The individual navigation template manufactured by the invention be used for carrying out positioning of osteotomy and a rotating axis on the affected knee femur condyle and tibia platform, thus realizing individual precise osteotomy.

Description

technical field [0001] The invention relates to the field of manufacturing methods of navigation templates for surgery, in particular to a method for manufacturing a navigation template for knee joint replacement and the navigation template. Background technique [0002] With the aging of society, osteoarthritis (OA) has become the most common bone and joint disease in all human beings. According to the latest statistics from the World Health Organization, the number of osteoarthritis caused by various reasons in humans is doubling year by year. The trend is that artificial joint replacement is often the outcome, which can solve the patient's pain and improve the quality of life, but the premise is that the precise osteotomy and prosthesis alignment and alignment can achieve the biomechanical reproduction after knee replacement. . [0003] As one of the major joint replacements, total knee arthroplasty (TKA) is a mature operation. The success or failure of total knee arthro...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06T17/00A61B19/00A61F2/46A61B90/00
Inventor 陆声甘煜东
Owner 中国人民解放军联勤保障部队第九二〇医院
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