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Display and registration method for total knee arthroplasty

A technology of total knee replacement and relative relationship, which is applied in the field of display and registration for total knee replacement, can solve problems such as osteotomy reference error, osteotomy failure, and surgical area exposure, so as to shorten the matching time, Simple operation, accurate matching effect

Active Publication Date: 2021-08-17
西安和华瑞博科技有限公司
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Problems solved by technology

However, in TKA surgery, due to the limited exposure of the surgical area, the center of the femoral head and the center of the ankle joint cannot be directly seen with the naked eye, and the center of the femoral head and the ankle joint can only be judged indirectly by touching or shaking the thigh around the femoral head. center of joint
Because there is no way to see directly, it may lead to osteotomy reference error and osteotomy failure. Especially, the operation using the registration method must be performed by experienced doctors. For some intern doctors or those who seldom perform such operations For physicians, few opportunities to practice and learn

Method used

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] In the figure, first establish the bone standard sample database to obtain the information of the standard sample. The standard sample or bone standard sample in the present invention can be a real bone, such as a tibial bone or a femoral bone. The acquisition of real tibia and femur can be Obtain by scanning the skeleton of the virtual experimenter, the virtual experimenter can be a human body model; or the bone model of the femur or tibia made according to the real skeleton, the real skeleton and the model are all referred to as standard samples in the present invention; for convenience Description, the standard samples are numbered, and the standard samples are respectively standard sample 1 and standard sample 2. The present invention focuses on the process of data acquisition taking standard sample 1 as the femur as an example:

[0016] Use CT scanning te...

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Abstract

The invention relates to a display and registration method of a virtual bone used in total knee replacement in a mixed reality scene. A three-dimensional virtual image that is completely consistent with the femur and the tibia is established, and the space relative to the actual bone and the feature body is determined. On the basis of the relationship, by identifying the feature body, the three-dimensional virtual bone image in the virtual space is matched with the relative relationship of the femur in the actual space, and the model can follow the movement of the bone. Using the method of the present invention to match the speed block has high accuracy. .

Description

technical field [0001] The invention relates to a training method for matching a virtual three-dimensional skeleton image with a real skeleton. Background technique [0002] Total knee arthroplasty (Total Knee Arthroplasty, hereinafter referred to as TKA) is a new technology for the treatment of knee joint diseases, which can effectively treat severe knee joint pain and greatly improve the quality of life of patients. The main process of artificial joint replacement surgery includes accurate osteotomy in three-dimensional space, the balance and stability of soft tissues such as ligaments, and the position and angle of prosthesis placement. Total knee replacement has particularly strict requirements on these factors. Bone processes are particularly important. Among them, the line of force of the lower limb is an important reference for osteotomy. The classic line of force of the coronal plane of the lower limb refers to a line from the center of the femoral head passing thro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B34/10A61B90/00G09B9/00
CPCA61B34/10A61B90/36A61B2034/105A61B2034/107A61B2090/365G09B9/00
Inventor 陈鑫石国健
Owner 西安和华瑞博科技有限公司
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